#813731
Closest named color: Red Brown (#8B2E16). oklch(43.6% 0.104 26.9), rgb(129, 55, 49).
Aa
White text reads best on this color (8.31:1).
About this color
#813731 is a dark, moderately saturated red. In OKLCH its lightness is 44%, its chroma 0.104 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Red Brown (#8B2E16), ΔE 0.033 away. White text reads best on it, at 8.31:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.104) |
| Temperature | warm |
| Nearest name | Red Brown (#8B2E16) |
| Black text | 2.52:1 |
| White text | 8.31:1 |
Values
| HEX | #813731 |
| RGB | rgb(129, 55, 49) |
| HSL | hsl(5, 45%, 35%) |
| OKLCH | oklch(43.6% 0.104 26.9) |
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 #813731 | 8.31:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #813731 | 2.52:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #813731 text on white | 8.31:1 | AAA | Lc 88.2 | Fine for body text |
| #813731 text on black | 2.52:1 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F5E6E4
oklch(93.6% 0.017 26.7)
-
Step 200
200
#EFD1CD
oklch(88.5% 0.034 26.8)
-
Step 300
300
#E5B2AC
oklch(80.8% 0.06 26.2)
-
Step 400
400
#D68980
oklch(70.7% 0.096 27)
-
Step 500
500
#CA6960
oklch(63.1% 0.125 26.7)
-
Step 600
600
#B54F46
oklch(55.7% 0.135 27.3)
-
Step 700
700
#9B3F38
oklch(49.1% 0.125 27)
-
Step 800
800 (this color)
#813731
oklch(43.6% 0.104 26.9)
-
Step 900
900
#662E29
oklch(37.6% 0.082 26.9)
-
Step 950
950
#3C1C19
oklch(27.1% 0.051 26.5)
#813731 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) | #494430 | 0.109 |
| Deuteranopia (no green cones) | #5C542F | 0.100 |
| Tritanopia (no blue cones) | #8D2A36 | 0.035 |
| Achromatopsia (no color) | #4E4E4E | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #813731
#813731
oklch(43.6% 0.104 26.9)
- #005D66
#005D66
oklch(43.7% 0.075 206.3)
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 #813731, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Brown #8B2E16 ΔE 0.033
- Rust Brown #8B3103 ΔE 0.041
- Brownish Purple #76424E ΔE 0.045
- Brown Red #922B05 ΔE 0.047
- Purple Brown #673A3F ΔE 0.054
- Auburn #9B2226 ΔE 0.056
- Saddle Brown #8B4513 ΔE 0.057
- Chestnut #742802 ΔE 0.058
Use #813731 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.