#81330B
Closest named color: Rust Brown (#8B3103). oklch(42.5% 0.118 43), rgb(129, 51, 11).
Aa
White text reads best on this color (8.70:1).
About this color
#81330B is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.118 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Brown (#8B3103), ΔE 0.020 away. White text reads best on it, at 8.70:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #81330B |
| RGB | rgb(129, 51, 11) |
| HSL | hsl(20, 84%, 27%) |
| OKLCH | oklch(42.5% 0.118 43) |
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 #81330B | 8.70:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #81330B | 2.41:1 | Fails | Lc 14.8 | Not readable |
| #81330B text on white | 8.70:1 | AAA | Lc 89.1 | Fine for body text |
| #81330B text on black | 2.41:1 | Fails | Lc -13.1 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6DF
oklch(93.6% 0.02 45.3)
-
Step 200
200
#F0D2C5
oklch(88.5% 0.038 44.8)
-
Step 300
300
#E8B39D
oklch(80.9% 0.069 43.6)
-
Step 400
400
#DA8967
oklch(70.7% 0.11 43.4)
-
Step 500
500
#CE693D
oklch(63.1% 0.141 43)
-
Step 600
600
#BA4D16
oklch(55.6% 0.154 42.8)
-
Step 700
700
#A03D05
oklch(49.1% 0.143 42.7)
-
Step 800
800 (this color)
#81330B
oklch(42.5% 0.118 43)
-
Step 900
900
#682E14
oklch(37.6% 0.091 42.9)
-
Step 950
950
#3D1C0D
oklch(27% 0.057 44)
#81330B 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) | #4A4004 | 0.112 |
| Deuteranopia (no green cones) | #5D5207 | 0.102 |
| Tritanopia (no blue cones) | #8E202C | 0.058 |
| Achromatopsia (no color) | #4B4B4B | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81330B
#81330B
oklch(42.5% 0.118 43)
- #00576E
#00576E
oklch(42.4% 0.079 223.6)
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 #81330B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Brown #8B3103 ΔE 0.020
- Red Brown #8B2E16 ΔE 0.024
- Brown Red #922B05 ΔE 0.035
- Chestnut #742802 ΔE 0.039
- Saddle Brown #8B4513 ΔE 0.049
- Brick Red #8F1402 ΔE 0.050
- Burnt Red #9F2305 ΔE 0.062
- Dark Red #8B0000 ΔE 0.062
Use #81330B 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.