#902B31
Closest named color: Auburn (#9B2226). oklch(44.5% 0.136 21.3), rgb(144, 43, 49).
Aa
White text reads best on this color (8.15:1).
About this color
#902B31 is a dark, moderately saturated red. In OKLCH its lightness is 45%, its chroma 0.136 and its hue 21°. 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 8.15:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.136) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #902B31 |
| RGB | rgb(144, 43, 49) |
| HSL | hsl(356, 54%, 37%) |
| OKLCH | oklch(44.5% 0.136 21.3) |
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 #902B31 | 8.15:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #902B31 | 2.57:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #902B31 text on white | 8.15:1 | AAA | Lc 87.2 | Fine for body text |
| #902B31 text on black | 2.57:1 | Fails | Lc -14.9 | 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
#F5CECC
oklch(88.4% 0.044 21.5)
-
Step 300
300
#F0ADAA
oklch(81% 0.079 21.8)
-
Step 400
400
#E57E7D
oklch(70.7% 0.128 21.4)
-
Step 500
500
#DA595D
oklch(63.1% 0.162 21.1)
-
Step 600
600
#C53943
oklch(55.5% 0.176 21.3)
-
Step 700
700
#AA2A35
oklch(49.1% 0.164 21.3)
-
Step 800
800 (this color)
#902B31
oklch(44.5% 0.136 21.3)
-
Step 900
900
#6F2528
oklch(37.8% 0.105 21.3)
-
Step 950
950
#411718
oklch(27% 0.066 21.1)
#902B31 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) | #464230 | 0.148 |
| Deuteranopia (no green cones) | #60572E | 0.135 |
| Tritanopia (no blue cones) | #9E102E | 0.037 |
| Achromatopsia (no color) | #4F4F4F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #902B31
#902B31
oklch(44.5% 0.136 21.3)
- #006065
#006065
oklch(44.5% 0.076 201)
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 #902B31, 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 0.034
- Brown Red #922B05 ΔE 0.039
- Carmine #9D0216 ΔE 0.043
- Brown #A52A2A ΔE 0.044
- Brick Red #8F1402 ΔE 0.044
- Burnt Red #9F2305 ΔE 0.045
- Rust Brown #8B3103 ΔE 0.047
Use #902B31 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.