#831B2B
Closest named color: Red Wine (#8C0034). oklch(40.4% 0.138 18), rgb(131, 27, 43).
Aa
White text reads best on this color (9.73:1).
About this color
#831B2B is a dark, moderately saturated red. In OKLCH its lightness is 40%, its chroma 0.138 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Red Wine (#8C0034), ΔE 0.032 away. White text reads best on it, at 9.73:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Red Wine (#8C0034) |
| Black text | 2.15:1 |
| White text | 9.73:1 |
Values
| HEX | #831B2B |
| RGB | rgb(131, 27, 43) |
| HSL | hsl(351, 66%, 31%) |
| OKLCH | oklch(40.4% 0.138 18) |
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 #831B2B | 9.73:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #831B2B | 2.15:1 | Fails | Lc 12.7 | Not readable |
| #831B2B text on white | 9.73:1 | AAA | Lc 91.3 | Preferred for body text |
| #831B2B text on black | 2.15:1 | Fails | Lc -11.1 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F6CECE
oklch(88.6% 0.045 18)
-
Step 300
300
#F0ACAD
oklch(80.9% 0.08 18)
-
Step 400
400
#E67D82
oklch(70.7% 0.13 17.9)
-
Step 500
500
#DB5763
oklch(63.1% 0.165 17.8)
-
Step 600
600
#C6374A
oklch(55.6% 0.179 18)
-
Step 700
700
#AB273B
oklch(49.2% 0.167 18)
-
Step 800
800 (this color)
#831B2B
oklch(40.4% 0.138 18)
-
Step 900
900
#70232B
oklch(37.7% 0.108 18)
-
Step 950
950
#421619
oklch(27.1% 0.068 18.8)
#831B2B 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) | #39362B | 0.153 |
| Deuteranopia (no green cones) | #534C28 | 0.140 |
| Tritanopia (no blue cones) | #900022 | 0.030 |
| Achromatopsia (no color) | #444444 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831B2B
#831B2B
oklch(40.4% 0.138 18)
- #005456
#005456
oklch(40.5% 0.069 197.6)
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 #831B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Wine #8C0034 ΔE 0.032
- Wine Red #7B0323 ΔE 0.034
- Bordeaux #7B002C ΔE 0.038
- Dark Red #8B0000 ΔE 0.040
- Brick Red #8F1402 ΔE 0.043
- Maroon #800000 ΔE 0.043
- Wine #80013F ΔE 0.049
- Red Brown #8B2E16 ΔE 0.052
Use #831B2B 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.