#5B331D
Closest named color: Chestnut (#742802). oklch(36.6% 0.067 48.5), rgb(91, 51, 29).
Aa
White text reads best on this color (10.84:1).
About this color
#5B331D is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.067 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.053 away. White text reads best on it, at 10.84:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.93:1 |
| White text | 10.84:1 |
Values
| HEX | #5B331D |
| RGB | rgb(91, 51, 29) |
| HSL | hsl(21, 52%, 24%) |
| OKLCH | oklch(36.6% 0.067 48.5) |
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 #5B331D | 10.84:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #5B331D | 1.93:1 | Fails | Lc 9.0 | Not readable |
| #5B331D text on white | 10.84:1 | AAA | Lc 94.9 | Preferred for body text |
| #5B331D text on black | 1.93:1 | Fails | Lc -7.7 | 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 900.
-
Step 50
50
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F3E7E2
oklch(93.6% 0.015 44.2)
-
Step 200
200
#E9D4C9
oklch(88.4% 0.028 49.6)
-
Step 300
300
#DDB8A5
oklch(81% 0.05 48.7)
-
Step 400
400
#CA9274
oklch(70.7% 0.08 49.2)
-
Step 500
500
#BC7650
oklch(63.2% 0.103 48.7)
-
Step 600
600
#A75D33
oklch(55.6% 0.112 48.6)
-
Step 700
700
#8F4C26
oklch(49.1% 0.104 48.2)
-
Step 800
800
#743F21
oklch(42.7% 0.086 48.5)
-
Step 900
900 (this color)
#5B331D
oklch(36.6% 0.067 48.5)
-
Step 950
950
#372013
oklch(27% 0.042 49.7)
#5B331D 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) | #3E381B | 0.058 |
| Deuteranopia (no green cones) | #48411D | 0.053 |
| Tritanopia (no blue cones) | #642B2E | 0.041 |
| Achromatopsia (no color) | #3D3D3D | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B331D
#5B331D
oklch(36.6% 0.067 48.5)
- #09455B
#09455B
oklch(36.6% 0.068 229)
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 #5B331D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.053
- Purple Brown #673A3F ΔE 0.056
- Mud Brown #60460F ΔE 0.062
- Reddy Brown #6E1005 ΔE 0.070
- Charcoal Grey #3C4142 ΔE 0.074
- Onyx #343A40 ΔE 0.083
- Dark Olive #373E02 ΔE 0.084
- Blood #770001 ΔE 0.087
Use #5B331D 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.