#81372B
Closest named color: Red Brown (#8B2E16). oklch(43.5% 0.105 31.1), rgb(129, 55, 43).
Aa
White text reads best on this color (8.35:1).
About this color
#81372B is a dark, moderately saturated red. In OKLCH its lightness is 43%, its chroma 0.105 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Red Brown (#8B2E16), ΔE 0.028 away. White text reads best on it, at 8.35:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.105) |
| Temperature | warm |
| Nearest name | Red Brown (#8B2E16) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #81372B |
| RGB | rgb(129, 55, 43) |
| HSL | hsl(8, 50%, 34%) |
| OKLCH | oklch(43.5% 0.105 31.1) |
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 #81372B | 8.35:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #81372B | 2.51:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #81372B text on white | 8.35:1 | AAA | Lc 88.3 | Fine for body text |
| #81372B text on black | 2.51:1 | Fails | Lc -13.9 | 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
#FBF4F2
oklch(97.2% 0.008 36.6)
-
Step 100
100
#F6E6E3
oklch(93.7% 0.018 30.3)
-
Step 200
200
#EFD1CC
oklch(88.4% 0.034 29)
-
Step 300
300
#E6B3A9
oklch(81% 0.061 31.1)
-
Step 400
400
#D7897B
oklch(70.7% 0.099 30.8)
-
Step 500
500
#CA6A59
oklch(63.2% 0.125 31.3)
-
Step 600
600
#B54F3F
oklch(55.6% 0.136 30.9)
-
Step 700
700
#9C3F31
oklch(49.1% 0.127 30.8)
-
Step 800
800 (this color)
#81372B
oklch(43.5% 0.105 31.1)
-
Step 900
900
#662F25
oklch(37.7% 0.082 31.8)
-
Step 950
950
#3C1C16
oklch(27% 0.052 31.8)
#81372B 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) | #4A442A | 0.108 |
| Deuteranopia (no green cones) | #5C5429 | 0.100 |
| Tritanopia (no blue cones) | #8D2934 | 0.039 |
| Achromatopsia (no color) | #4E4E4E | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81372B
#81372B
oklch(43.5% 0.105 31.1)
- #005C69
#005C69
oklch(43.5% 0.076 211.3)
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 #81372B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Brown #8B2E16 ΔE 0.028
- Rust Brown #8B3103 ΔE 0.034
- Brown Red #922B05 ΔE 0.042
- Brownish Purple #76424E ΔE 0.051
- Saddle Brown #8B4513 ΔE 0.052
- Chestnut #742802 ΔE 0.054
- Brick Red #8F1402 ΔE 0.056
- Purple Brown #673A3F ΔE 0.057
Use #81372B 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.