#81371C
Closest named color: Rust Brown (#8B3103). oklch(43.3% 0.11 39.7), rgb(129, 55, 28).
Aa
White text reads best on this color (8.41:1).
About this color
#81371C is a dark, moderately saturated red. In OKLCH its lightness is 43%, its chroma 0.110 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Brown (#8B3103), ΔE 0.023 away. White text reads best on it, at 8.41:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.49:1 |
| White text | 8.41:1 |
Values
| HEX | #81371C |
| RGB | rgb(129, 55, 28) |
| HSL | hsl(16, 64%, 31%) |
| OKLCH | oklch(43.3% 0.11 39.7) |
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 #81371C | 8.41:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #81371C | 2.49:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #81371C text on white | 8.41:1 | AAA | Lc 88.4 | Fine for body text |
| #81371C text on black | 2.49:1 | Fails | Lc -13.8 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#EFD2C8
oklch(88.5% 0.035 40)
-
Step 300
300
#E6B3A2
oklch(80.9% 0.064 39.2)
-
Step 400
400
#D78A6F
oklch(70.6% 0.102 40.1)
-
Step 500
500
#CB6B49
oklch(63.2% 0.131 39.9)
-
Step 600
600
#B6502A
oklch(55.6% 0.142 39.9)
-
Step 700
700
#9D401D
oklch(49.2% 0.133 39.7)
-
Step 800
800 (this color)
#81371C
oklch(43.3% 0.11 39.7)
-
Step 900
900
#672F1C
oklch(37.7% 0.086 39.1)
-
Step 950
950
#3C1C11
oklch(26.9% 0.054 39.5)
#81371C 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) | #4B4319 | 0.107 |
| Deuteranopia (no green cones) | #5E541A | 0.098 |
| Tritanopia (no blue cones) | #8E2731 | 0.051 |
| Achromatopsia (no color) | #4D4D4D | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81371C
#81371C
oklch(43.3% 0.11 39.7)
- #005A6E
#005A6E
oklch(43.2% 0.079 219.7)
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 #81371C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Brown #8B3103 ΔE 0.023
- Red Brown #8B2E16 ΔE 0.024
- Brown Red #922B05 ΔE 0.037
- Saddle Brown #8B4513 ΔE 0.044
- Chestnut #742802 ΔE 0.047
- Brick Red #8F1402 ΔE 0.055
- Milk Chocolate #7F4E1E ΔE 0.057
- Auburn #9B2226 ΔE 0.062
Use #81371C 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.