#902831
Closest named color: Auburn (#9B2226). oklch(44.2% 0.139 20.3), rgb(144, 40, 49).
Aa
White text reads best on this color (8.28:1).
About this color
#902831 is a dark, moderately saturated red. In OKLCH its lightness is 44%, its chroma 0.139 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.025 away. White text reads best on it, at 8.28:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.139) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #902831 |
| RGB | rgb(144, 40, 49) |
| HSL | hsl(355, 57%, 36%) |
| OKLCH | oklch(44.2% 0.139 20.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #902831 | 8.28:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #902831 | 2.53:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #902831 text on white | 8.28:1 | AAA | Lc 87.6 | Fine for body text |
| #902831 text on black | 2.53:1 | Fails | Lc -14.6 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F6CECD
oklch(88.5% 0.045 19.7)
-
Step 300
300
#F1ACAB
oklch(80.9% 0.082 19.9)
-
Step 400
400
#E67D7E
oklch(70.7% 0.13 20.3)
-
Step 500
500
#DB575E
oklch(63% 0.166 20.1)
-
Step 600
600
#C73644
oklch(55.6% 0.181 20.3)
-
Step 700
700
#AB2736
oklch(49.1% 0.167 20.2)
-
Step 800
800 (this color)
#902831
oklch(44.2% 0.139 20.3)
-
Step 900
900
#702328
oklch(37.7% 0.109 20.3)
-
Step 950
950
#421618
oklch(27% 0.068 20.2)
#902831 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #444031 | 0.152 |
| Deuteranopia (no green cones) | #5F562E | 0.138 |
| Tritanopia (no blue cones) | #9E082C | 0.036 |
| Achromatopsia (no color) | #4E4E4E | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #902831
#902831
oklch(44.2% 0.139 20.3)
- #005F64
#005F64
oklch(44.2% 0.075 201.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #902831, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.025
- Red Brown #8B2E16 ΔE 0.036
- Carmine #9D0216 ΔE 0.041
- Brown Red #922B05 ΔE 0.042
- Brick Red #8F1402 ΔE 0.043
- Blood Red #980002 ΔE 0.046
- Brown #A52A2A ΔE 0.046
- Deep Red #9A0200 ΔE 0.046
Use #902831 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.