OPEN Slow-Drying Acrylics - Pigment Detail Chart
OPEN Slow-Drying Color Page
Filter:
| Color Name (ItemNumber) | Series | Pigment (CI Name) | Opacity / Transparency | Lightfastness rating | Munsell Notation Listing | Gloss Average | Viscosity Range | CIE L*a*b* Values | Tint Strength | |
|---|---|---|---|---|---|---|---|---|---|---|
 | Cadmium Yellow Primrose (7135) | 7 | PY35 |  |  | Hue:10 Value:0 Chroma:16 | 65.1 | 4000-15000 CPS | L*91.06 a*-8.78 b*85.05 | 96.49 |
 | Bismuth Vanadate Yellow (7007) | 9 | PY184 | | | Hue:8.1 Value:9 Chroma:12.2 | 50.4 | 4000-15000 CPS | L*89.8 a*-4.89 b*90.2 | 96.18 |
 | Benzimidazolone Yellow Light (7009) | 3 | PY175 |  | | Hue:5 Y Value:8.4 Chroma:13 | 0 | N/A | L*83.43 a*4.73 b*91.99 | 0 |
 | Benzimidazolone Yellow Medium (7008) | 3 | PY154 |  | | Hue:2.6 Y Value:8.1 Chroma:14 | 0 | N/A | L*80.04 a*15.76 b*93.13 | 0 |
 | Hansa Yellow Opaque (7191) | 4 | PY74 | | | Hue:5 Value:0 Chroma:16 | 52.8 | 4000-15000 CPS | L*85.41 a*11.09 b*93.99 | 94.06 |
 | Cadmium Yellow Medium (7130) | 7 | PY35 | | | Hue:3 Value:0 Chroma:16.1 | 76.5 | 4000-15000 CPS | L*83.91 a*15.55 b*94.46 | 92.95 |
 | Nickel Azo Yellow (7225) | 6 | PY150 | | | Hue:3.5 Value:4.7 Chroma:9 | 43.2 | 4000-15000 CPS | L*52.06 a*12.26 b*40.34 | 91.7 |
 | India Yellow Hue (7455) | 4 | PY175, PY150, PR206 | | | Hue:5 Value:5.3 Chroma:9.5 | 35.1 | 4000-15000 CPS | L*55.2 a*28.9 b*48.11 | 89.97 |
 | Azo Gold (7302) | 4 | PR101, PY150 | |  | Hue:0 Value:0 Chroma:0 | 0 | L*0 a*0 b*0 | 0 | |
 | Cadmium Yellow Dark (7110) | 7 | PY35 | | | Hue:9.8 Y Value:7 Chroma:14.2 | 35.4 | 4000-15000 CPS | L*78.28 a*25.47 b*87.39 | 91.79 |
 | Diarylide Yellow (7147) | 6 | PY83(HR70) | | | Hue:7.7 Y Value:7 Chroma:14.4 | 75.8 | 4000-15000 CPS | L*75.42 a*33.41 b*83.26 | 89.81 |
 | Cadmium Orange (7070) | 8 | PO20 | | | Hue:2 Y Value:6.2 Chroma:17.5 | 69.3 | 4000-15000 CPS | L*63.85 a*53.5 b*63.6 | 85.5 |
 | Pyrrole Orange (7276) | 8 | PO73 | | | Hue:8.6 Value:5 Chroma:15.8 | 70.5 | 4000-15000 CPS | L*56.46 a*60.04 b*53.94 | 84.45 |
 | Cadmium Red Light (7090) | 9 | PR108 | | | Hue:9 Value:5.2 Chroma:15.9 | 71.8 | 4000-15000 CPS | L*51.78 a*57.62 b*42.74 | 78.88 |
 | Naphthol Red Light (7210) | 5 | PR112 | |  | Hue:6.7 Value:4 Chroma:14 | 91.3 | 4000-15000 CPS | L*46.06 a*55.25 b*36.2 | 77.69 |
 | Pyrrole Red (7277) | 8 | PR254 | | | Hue:6.5 Value:4.2 Chroma:17 | 52.4 | 4000-15000 CPS | L*42.26 a*54.6 b*31.25 | 77 |
 | Cadmium Red Medium (7100) | 9 | PR108 | | | Hue:7 Value:4.2 Chroma:16 | 71 | 4000-15000 CPS | L*42.85 a*50.1 b*27.7 | 77.19 |
 | Cadmium Red Dark (7080) | 9 | PR108 | | | Hue:4.7 Value:3 Chroma:10.5 | 33.9 | 4000-15000 CPS | L*37.76 a*42.4 b*19.72 | 77.73 |
 | Pyrrole Red Dark (7278) | 8 | PR264 | | | Hue:4.8 Value:3 Chroma:11.3 | 82.9 | 4000-15000 CPS | L*36.13 a*46.15 b*21.13 | 68.38 |
 | Naphthol Red Medium (7220) | 5 | PR5 | | | Hue:6 Value:3 Chroma:10.6 | 18.1 | 4000-15000 CPS | L*36.83 a*38.81 b*20.83 | 80.04 |
 | Quinacridone Red (7310) | 6 | PV19 | | | Hue:4.3 Value:3 Chroma:10.4 | 92 | 4000-15000 CPS | L*37.03 a*40.17 b*15.66 | 76.78 |
 | Alizarin Crimson Hue (7450) | 7 | PR122, PY150 | | | Hue:10 R Value:2 Chroma:1.2 | 58.1 | 4000-15000 CPS | L*27.94 a*9.37 b*2.19 | 76.38 |
 | Permanent Maroon (7252) | 7 | PR122, PY150, PR101, PG7 | | | Hue:1 Value:2 Chroma:1.1 | 38.5 | 4000-15000 CPS | L*26.25 a*5.62 b*0.71 | 78.87 |
 | Quinacridone Magenta (7305) | 7 | PR122 | | | Hue:10 R Value:2 Chroma:10 | 88.9 | 4000-15000 CPS | L*31.41 a*27.69 b*2.75 | 77 |
 | Permanent Violet Dark (7253) | 7 | PR122, PB60 | | | Hue:1.1 R Value:2 Chroma:1.3 | 83.7 | 4000-15000 CPS | L*25.98 a*6.57 b*-3.74 | 76.18 |
 | Ultramarine Violet (7401) | 4 | PV15 | | | Hue:1 Value:2 Chroma:8.9 | 7.9 | 4000-15000 CPS | L*27.66 a*21.41 b*-32.85 | 90.6 |
 | Dioxazine Purple (7150) | 6 | PV23 | | | Hue:2.5 Value:0 Chroma:0.5 | 84.2 | 4000-15000 CPS | L*24.76 a*2.81 b*-0.17 | 69.16 |
 | Ultramarine Blue (7400) | 2 | PB29 | | | Hue:8 P Value:0 Chroma:4.5 | 15.7 | 4000-15000 CPS | L*24.36 a*12.28 b*-25.74 | 82 |
 | Light Ultramarine Blue (7566) | 2 | PW6, PB29 |  | | Hue:6.6 P Value:6 Chroma:10.8 | 53.3 | 4000-15000 CPS | L*65.4 a*1.03 b*-40.24 | 88.43 |
 | Cobalt Blue (7140) | 8 | PB28 | | | Hue:6 P Value:0 Chroma:11 | 72.8 | 4000-15000 CPS | L*36.63 a*9.51 b*-46.66 | 85.51 |
 | Cerulean Blue, Chromium (7050) | 7 | PB36 | | | Hue:1 P Value:0 Chroma:7.9 | 39.1 | 4000-15000 CPS | L*42.76 a*-12.04 b*-32.29 | 89.23 |
 | Anthraquinone Blue (7005) | 7 | PB60 | | | Hue:4.4 Value:2 Chroma:1.3 | 80.3 | 4000-15000 CPS | L*24.57 a*4.89 b*-6.06 | 75.07 |
 | Prussian Blue Hue (7460) | 4 | PBk9, PB15:0, PV23 | | | Hue:8.9 P Value:2 Chroma:0.8 | 29.4 | 4000-15000 CPS | L*24.09 a*1.17 b*-3.9 | 75.09 |
 | Phthalo Blue (Red Shade) (7260) | 4 | PB15:0 | | | Hue:9.5 PB Value:2 Chroma:3.8 | 70 | 4000-15000 CPS | L*24.2 a*5.77 b*-13.98 | 74.66 |
 | Phthalo Blue (Green Shade) (7255) | 4 | PB15:3 | | | Hue:7 P Value:1.2 Chroma:6.5 | 85.3 | 4000-15000 CPS | L*24.95 a*8.48 b*-18.01 | 73 |
 | Light Phthalo Blue (7577) | 1 | PW6, PB15:3 | | | Hue:0 Value:0 Chroma:0 | 0 | L*0 a*0 b*0 | 0 | |
 | Manganese Blue Hue (7457) | 1 | PW6, PB15:3, PG7 | | | Hue:6 Value:3.9 Chroma:7.3 | 77.6 | 4000-15000 CPS | L*41.18 a*-14.38 b*-31.78 | 83.79 |
 | Teal (7369) | 3 | PW6, PG7, PB15:3 | | | Hue:9.3 B Value:5 Chroma:9.4 | 83.7 | 20000-24000 CPS | L*62.4 a*-45.25 b*-13.35 | 86.24 |
 | Cobalt Teal (7145) | 7 | PG50 | | | Hue:8.8 BG Value:5.5 Chroma:9 | 0 | N/A | L*58.58 a*-43.11 b*-12.36 | 0 |
 | Cobalt Turquoise (7144) | 8 | PB36 | | | Hue:8.7 B Value:4 Chroma:5.9 | 56.1 | 4000-15000 CPS | L*43.21 a*-28.74 b*-9.21 | 87.42 |
 | Phthalo Green (Blue Shade) (7270) | 4 | PG7 | | | Hue:5 B Value:1.2 Chroma:5 | 97.8 | 4000-15000 CPS | L*27.19 a*-8.89 b*4.8 | 80 |
 | Viridian Green Hue (7469) | 1 | PW6, PB15:3, PBr7, PY150 | | | Hue:8.8 Value:3 Chroma:5 | 83.7 | 4000-15000 CPS | L*35.64 a*-24.01 b*0.39 | 85.23 |
 | Phthalo Green (Yellow Shade) (7275) | 4 | PG36 | | | Hue:8.9 Value:2 Chroma:3.5 | 88.6 | 4000-15000 CPS | L*29.24 a*-17.87 b*3.48 | 85.13 |
 | Permanent Green Light (7250) | 4 | PY175, PG7, PW6 | | | Hue:4.4 Value:4 Chroma:9 | 59.2 | 4000-15000 CPS | L*43.41 a*-47.92 b*18.53 | 85.01 |
 | Cobalt Green (7142) | 4 | PG26 | | | Hue:9.2 Value:3 Chroma:3.5 | 62.2 | 4000-15000 CPS | L*35.16 a*-17.98 b*3.39 | 88.81 |
 | Jenkins Green (7195) | 7 | PBk9, PG36, PY150 | | | Hue:8 G Value:1 Chroma:2.4 | 28.4 | 4000-15000 CPS | L*26.47 a*-3.3 b*-0.58 | 82.76 |
 | Sap Green Hue (7461) | 4 | PR101, PY150, PG36, PBk7 | | | Hue:0.75 Value:2.7 Chroma:1.2 | 82 | 4000-15000 CPS | L*27.81 a*-3.43 b*1.3 | 80.9 |
 | Terre Verte Hue (7468) | 1 | PG17, PBr7, PBk9, PY42, PG36 | | | Hue:7.8 G Value:3 Chroma:2.2 | 59.1 | 4000-15000 CPS | L*35.3 a*-6.93 b*8.69 | 91.58 |
 | Chromium Oxide Green Dark (7061) | 3 | PG17 | | | Hue:9.7 G Value:3 Chroma:2.7 | 55.9 | 4000-15000 CPS | L*33.97 a*-9.57 b*8.75 | 89.17 |
 | Chromium Oxide Green (7060) | 3 | PG17 | | | Hue:9 G Value:0 Chroma:4.6 | 51.9 | 4000-15000 CPS | L*44.19 a*-15.5 b*16.04 | 85.18 |
 | Green Gold (7170) | 7 | PY150, PG36, PY175 | | | Hue:2 G Value:4.2 Chroma:7.3 | 62.8 | 4000-15000 CPS | L*47.2 a*-12.25 b*32.2 | 90.25 |
 | Titan Green Pale (7371) | 1 | PW6, PY42, PBr7, PG7 | | | Hue:5.3 G Value:8 Chroma:1.8 | 79.3 | N/A | L*81.3 a*-4.66 b*12.52 | 94.71 |
 | Titan Buff (7370) | 1 | PW6:1, PW6 | | | Hue:4.5 Value:8.2 Chroma:2.8 | 28.5 | 4000-15000 CPS | L*84.57 a*2.01 b*16.99 | 94 |
 | Naples Yellow Hue (7459) | 2 | PW6:1, PW6, PY42, PY83(HR70) | | | Hue:10 Y Value:7 Chroma:6.7 | 54.3 | 4000-15000 CPS | L*77.26 a*12.1 b*38.74 | 93.83 |
 | Yellow Ochre (7407) | 1 | PY43 | | | Hue:9.5 Y Value:0 Chroma:8.8 | 19.5 | 4000-15000 CPS | L*57.53 a*16.17 b*37.79 | 90 |
 | Yellow Oxide (7410) | 1 | PY42 | | | Hue:0.4 Value:6 Chroma:7.3 | 86.9 | 4000-15000 CPS | L*62.44 a*14.81 b*45.47 | 89.06 |
 | Transparent Yellow Iron Oxide (7386) | 3 | PY42 | | | Hue:5.5 Y Value:0 Chroma:6.3 | 92.2 | 4000-15000 CPS | L*50.31 a*20.99 b*31.79 | 91.92 |
 | Raw Sienna (7340) | 1 | PY43 | | | Hue:7.8 Y Value:5 Chroma:5.8 | 14.2 | 4000-15000 CPS | L*88.09 a*4.82 b*12.73 | 90 |
 | Mars Yellow (7202) | 1 | PBr6 | | | Hue:1.7 Y Value:4 Chroma:6.8 | 65.4 | 4000-15000 CPS | L*47.24 a*25.99 b*27.34 | 81.39 |
 | Titan Mars Pale (7576) | 1 | PW6, PBr6 | | | Hue:0 Value:0 Chroma:0 | 0 | L*0 a*0 b*0 | 0 | |
 | Transparent Red Iron Oxide (7385) | 3 | PR101 | | | Hue:5 Y Value:2 Chroma:6 | 96.7 | 4000-15000 CPS | L*32.8 a*16.85 b*8.85 | 84 |
 | Red Oxide (7360) | 1 | PR101 | | | Hue:10 Value:0 Chroma:7.8 | 67.7 | 4000-15000 CPS | L*67.39 a*19.45 b*7.31 | 73 |
 | Violet Oxide (7405) | 1 | PR101 | | | Hue:5.2 Value:3 Chroma:3.8 | 62.7 | 4000-15000 CPS | L*31.72 a*18.16 b*7.98 | 81.51 |
 | Burnt Sienna (7020) | 1 | PBr7 | | | Hue:3 Y Value:3.2 Chroma:4 | 9.5 | 4000-15000 CPS | L*33.67 a*16.86 b*12.58 | 83.9 |
 | Transparent Brown Iron Oxide (7383) | 3 | PR101, PBk7 | | | Hue:5.4 Y Value:3 Chroma:1.1 | 88.2 | 4000-15000 CPS | L*31.92 a*4.64 b*5.59 | 81.79 |
 | Burnt Umber (7030) | 1 | PBr7 | | | Hue:9 Y Value:2 Chroma:1 | 2.4 | 4000-15000 CPS | L*28.57 a*2.86 b*4.06 | 83.74 |
 | Raw Umber (7350) | 1 | PBr7 | | | Hue:3 Value:2 Chroma:1.3 | 9.6 | 4000-15000 CPS | L*29.25 a*1.04 b*2.67 | 81 |
 | Van Dyke Brown Hue (7462) | 3 | PR101, PBk7 | | | Hue:5 G Value:2 Chroma:0.7 | 45.3 | 4000-15000 CPS | L*27.04 a*0.3 b*-0.04 | 76.97 |
 | Carbon Black (7040) | 1 | PBk7 | | | Hue:0 Value:0 Chroma:0.3 | 57.1 | 4000-15000 CPS | L*25.77 a*0.2 b*-0.17 | 61.74 |
 | Bone Black (7010) | 1 | PBk9 | | | Hue:0 Value:0 Chroma:0.5 | 13.5 | 4000-15000 CPS | L*24.58 a*-0.03 b*-0.46 | 82.82 |
 | Payne's Gray (7240) | 2 | PB29, PBk7 | | | Hue:4 P Value:1.7 Chroma:0.6 | 45.7 | 4000-15000 CPS | L*24.12 a*0.05 b*-2.24 | 76.06 |
 | Zinc White (7415) | 1 | PW4 | | | Hue:0.2 G Value:9 Chroma:0.3 | 56.6 | 4000-15000 CPS | L*94.19 a*-0.66 b*2.01 | 25.67 |
 | Titanium White (7380) | 1 | PW6 | | | Hue:8 G Value:9 Chroma:0.1 | 83.6 | 10000-20000 CPS | L*98.28 a*-0.9 b*1.67 | 35 |
 | N5 Neutral Gray (7445) | 1 | PW6, PBk9, PBr7 | | | Hue:8.3 Y Value:5.1 Chroma:5.1 | 0 | N/A | L*52.02 a*-0.21 b*-0.28 | 0 |
 | Iridescent Copper (Fine) (7482) | 7 | N/A | | N/A | Hue:0 Value:0 Chroma:0 | 41.82 | N/A | L*0 a*0 b*0 | 0 |
 | Iridescent Bronze (Fine) (7481) | 7 | N/A, PG7 | | N/A | Hue:0 Value:0 Chroma:0 | 44.05 | 5000-6000 CPS | L*0 a*0 b*0 | 0 |
 | Iridescent Gold (Fine) (7484) | 6 | N/A | | N/A | Hue:0 Value:0 Chroma:0 | 0 | N/A | L*0 a*0 b*0 | 0 |
 | Iridescent Bright Gold (Fine) (7480) | 7 | PY150, N/A, PR206 | | N/A | Hue:0 Value:0 Chroma:0 | 0 | N/A | L*0 a*0 b*0 | 0 |
 | Iridescent Pearl (Fine) (7486) | 4 | N/A | | N/A | Hue:0 Value:0 Chroma:0 | 0 | N/A | L*0 a*0 b*0 | 0 |
 | Iridescent Silver (Fine) (7487) | 5 | N/A, PBk7 | | N/A | Hue:0 Value:0 Chroma:0 | 37.66 | N/A | L*0 a*0 b*0 | 0 |
 | Quinacridone / Nickel Azo Gold (Discontinued) (7301) | 7 | PY150, PO48 | | | Hue:2.2 Y Value:3 Chroma:4 | 61.1 | 4000-15000 CPS | L*34.34 a*18.65 b*14.23 | 87 |
| Quinacridone Burnt Orange (Discontinued) (7280) | 7 | PR206 | | | Hue:5.6 Value:0 Chroma:3.8 | 80.3 | 4000-15000 CPS | L*30.75 a*17.85 b*8.42 | 80.87 | |
 | Quinacridone Crimson (7290) | 7 | PR202, PR206 | | | Hue:2.9 Value:2 Chroma:5.1 | 75.8 | 4000-15000 CPS | L*29.64 a*22.43 b*6.65 | 80.17 |
Lightfastness
The Lightfastness Ratings are provided by the American Society for Testing and Materials (ASTM) in the standard for "Artists' Acrylic Emulsion Paints". (ASTM D 5098, Annual Book of Standards, Volume 6.02). Colors with a Lightfastness Rating of I are considered Excellent and those with a Lightfastness Rating of II are Very Good. Where Lightfastness Ratings have not been obtained according to ASTM test protocol, "N/A" is used. In those cases, data from pigment manufacturers and our own test facilities have been used and an appropriate description assigned under Permanency.
Lightfastness I: Excellent
Artist colors are let down with white to arrive at a pastel shade. These samples are exposed to an accelerated dose of light energy equivalent to that which would be expected to occur during approximately 100 years of museum-lit conditions. This exposure is condensed into approximately 15 weeks of testing time, or less, depending upon the accelerated test methods used. For the purposes of the official test, before and after color difference is determined using a spectrophotometer, and difference units are mathematically calculated. Less than 4 units color change earns a color the designation of Lightfastness I. In practicality, this means that a visual comparison of the unexposed and exposed samples, when held adjacent, would reveal, at worse, a barely perceptible color change.
Lightfastness II: Very Good
Under the same test conditions, a visual comparison of adjacent unexposed and exposed samples will reveal a perceptible color change. This change will quickly become imperceptible to most observers as the sample pieces are moved apart from one another. When expressed mathematically, change falling within the range of 4-8 units is covered by this category.
Permanency
Lightfastness and durability based on our testing and manufacturer's data. The levels of permanency are:
- Excellent (Exc.)
- Very Good (V.G.)
- Poor
Opacity / Transparency
We have determined that an eight-point scale is most appropriate for describing the properties of our colors. We have assigned each color in the chart a number from 1 (most opaque) to 8 (most transparent) to indicate the opacity/transparency of that color.
Color Index Name & Number
The Colour Index Name and Number are internationally recognized codes assigned to a particular "colorant" by both the Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists. The C.I. Name consists of the category (type of dye or pigment), general hue and serial number, based on its chemical constitution. For example, PB 60, Anthraquinone Blue, indicates a specific Pigment Blue. The C.I. Number is a five-digit reference number assigned in the Colour Index based on the chemical structure of a colorant, regardless of usage class. For more information on these check out the following article:
Pigment Classification
Designates whether the pigments used in a color are based on Organic or Inorganic chemistry. When containing both types, the term Mixed is used.
Abbreviations
- C.P. - indicates concentrated cadmium pigments (CC)
- G.S. - Green Shade
- B.S. - Blue Shade
- R.S. - Red Shade
- Y.S. - Yellow Shade