#83371B
Closest named color: Rust Brown (#8B3103). oklch(43.6% 0.112 39.7), rgb(131, 55, 27).
Aa
White text reads best on this color (8.30:1).
About this color
#83371B is a dark, moderately saturated red. In OKLCH its lightness is 44%, its chroma 0.112 and its hue 40°. 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 8.30:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.112) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.52:1 |
| White text | 8.30:1 |
Values
| HEX | #83371B |
| RGB | rgb(131, 55, 27) |
| HSL | hsl(16, 66%, 31%) |
| OKLCH | oklch(43.6% 0.112 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 #83371B | 8.30:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #83371B | 2.52:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #83371B text on white | 8.30:1 | AAA | Lc 88.1 | Fine for body text |
| #83371B text on black | 2.52:1 | Fails | Lc -14.1 | 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
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#F0D2C7
oklch(88.6% 0.037 41.2)
-
Step 300
300
#E7B3A1
oklch(80.9% 0.066 39.9)
-
Step 400
400
#D9896E
oklch(70.7% 0.106 39.4)
-
Step 500
500
#CC6A47
oklch(63.1% 0.134 40)
-
Step 600
600
#B84F27
oklch(55.7% 0.146 40.1)
-
Step 700
700
#9E3F1A
oklch(49.2% 0.136 39.9)
-
Step 800
800 (this color)
#83371B
oklch(43.6% 0.112 39.7)
-
Step 900
900
#672F1A
oklch(37.7% 0.087 40.5)
-
Step 950
950
#3D1C10
oklch(27.1% 0.056 40.4)
#83371B 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) | #4C4417 | 0.110 |
| Deuteranopia (no green cones) | #5F5519 | 0.101 |
| Tritanopia (no blue cones) | #902631 | 0.052 |
| Achromatopsia (no color) | #4E4E4E | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #83371B
#83371B
oklch(43.6% 0.112 39.7)
- #005B6F
#005B6F
oklch(43.6% 0.079 219.5)
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 #83371B, 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 0.021
- Brown Red #922B05 ΔE 0.033
- Saddle Brown #8B4513 ΔE 0.041
- Chestnut #742802 ΔE 0.050
- Brick Red #8F1402 ΔE 0.053
- Milk Chocolate #7F4E1E ΔE 0.056
- Burnt Red #9F2305 ΔE 0.059
Use #83371B 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.