#83370F
Closest named color: Rust Brown (#8B3103). oklch(43.5% 0.116 44.1), rgb(131, 55, 15).
Aa
White text reads best on this color (8.33:1).
About this color
#83370F is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.116 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Brown (#8B3103), ΔE 0.018 away. White text reads best on it, at 8.33:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.116) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #83370F |
| RGB | rgb(131, 55, 15) |
| HSL | hsl(21, 79%, 29%) |
| OKLCH | oklch(43.5% 0.116 44.1) |
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 #83370F | 8.33:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #83370F | 2.51:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #83370F text on white | 8.33:1 | AAA | Lc 88.1 | Fine for body text |
| #83370F text on black | 2.51:1 | Fails | Lc -14.0 | 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
#E7B39D
oklch(80.8% 0.068 44)
-
Step 400
400
#D98A67
oklch(70.7% 0.109 44.5)
-
Step 500
500
#CD6A3D
oklch(63.2% 0.139 43.8)
-
Step 600
600
#B84F16
oklch(55.6% 0.15 44.2)
-
Step 700
700
#9E3F05
oklch(49.1% 0.14 44.2)
-
Step 800
800 (this color)
#83370F
oklch(43.5% 0.116 44.1)
-
Step 900
900
#682F14
oklch(37.8% 0.091 43.9)
-
Step 950
950
#3D1C0D
oklch(27% 0.057 44)
#83370F 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) | #4D4308 | 0.109 |
| Deuteranopia (no green cones) | #5F540C | 0.099 |
| Tritanopia (no blue cones) | #91252F | 0.059 |
| Achromatopsia (no color) | #4E4E4E | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #83370F
#83370F
oklch(43.5% 0.116 44.1)
- #005A72
#005A72
oklch(43.4% 0.082 223.9)
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 #83370F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Brown #8B3103 ΔE 0.018
- Red Brown #8B2E16 ΔE 0.025
- Brown Red #922B05 ΔE 0.034
- Saddle Brown #8B4513 ΔE 0.038
- Chestnut #742802 ΔE 0.049
- Milk Chocolate #7F4E1E ΔE 0.054
- Brick Red #8F1402 ΔE 0.055
- Burnt Red #9F2305 ΔE 0.060
Use #83370F 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.