#81370F
Closest named color: Rust Brown (#8B3103). oklch(43.2% 0.114 44.6), rgb(129, 55, 15).
Aa
White text reads best on this color (8.44:1).
About this color
#81370F is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.114 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Brown (#8B3103), ΔE 0.021 away. White text reads best on it, at 8.44:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.114) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.48:1 |
| White text | 8.44:1 |
Values
| HEX | #81370F |
| RGB | rgb(129, 55, 15) |
| HSL | hsl(21, 79%, 28%) |
| OKLCH | oklch(43.2% 0.114 44.6) |
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 #81370F | 8.44:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #81370F | 2.48:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #81370F text on white | 8.44:1 | AAA | Lc 88.5 | Fine for body text |
| #81370F text on black | 2.48:1 | Fails | Lc -13.7 | 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
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#EFD2C6
oklch(88.5% 0.037 43.8)
-
Step 300
300
#E6B49E
oklch(80.9% 0.066 44.9)
-
Step 400
400
#D88B68
oklch(70.8% 0.106 45)
-
Step 500
500
#CB6B3E
oklch(63.1% 0.135 44.5)
-
Step 600
600
#B75018
oklch(55.6% 0.148 44.5)
-
Step 700
700
#9D4008
oklch(49.1% 0.137 44.5)
-
Step 800
800 (this color)
#81370F
oklch(43.2% 0.114 44.6)
-
Step 900
900
#673014
oklch(37.8% 0.088 45.3)
-
Step 950
950
#3C1C0D
oklch(26.8% 0.056 44.7)
#81370F 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) | #4C4308 | 0.107 |
| Deuteranopia (no green cones) | #5E530C | 0.096 |
| Tritanopia (no blue cones) | #8E262F | 0.058 |
| Achromatopsia (no color) | #4D4D4D | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81370F
#81370F
oklch(43.2% 0.114 44.6)
- #005972
#005972
oklch(43.2% 0.082 225.2)
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 #81370F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Brown #8B3103 ΔE 0.021
- Red Brown #8B2E16 ΔE 0.027
- Brown Red #922B05 ΔE 0.037
- Saddle Brown #8B4513 ΔE 0.041
- Chestnut #742802 ΔE 0.046
- Milk Chocolate #7F4E1E ΔE 0.055
- Brick Red #8F1402 ΔE 0.056
- Burnt Red #9F2305 ΔE 0.064
Use #81370F 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.