#5B310D
Closest named color: Chestnut (#742802). oklch(36% 0.077 56.6), rgb(91, 49, 13).
Aa
White text reads best on this color (11.11:1).
About this color
#5B310D is a dark, moderately saturated brown. In OKLCH its lightness is 36%, its chroma 0.077 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.052 away. White text reads best on it, at 11.11:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.88:1 |
| White text | 11.11:1 |
Values
| HEX | #5B310D |
| RGB | rgb(91, 49, 13) |
| HSL | hsl(28, 75%, 20%) |
| OKLCH | oklch(36% 0.077 56.6) |
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 #5B310D | 11.11:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #5B310D | 1.88:1 | Fails | Lc 8.5 | Not readable |
| #5B310D text on white | 11.11:1 | AAA | Lc 95.4 | Preferred for body text |
| #5B310D text on black | 1.88:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F3E7DF
oklch(93.5% 0.017 56.2)
-
Step 200
200
#EAD4C5
oklch(88.4% 0.032 56.6)
-
Step 300
300
#DEB89D
oklch(80.9% 0.057 57.2)
-
Step 400
400
#CD9266
oklch(70.8% 0.093 57.3)
-
Step 500
500
#BF753B
oklch(63.1% 0.118 56.4)
-
Step 600
600
#AA5C12
oklch(55.6% 0.128 56.6)
-
Step 700
700
#924B00
oklch(49.1% 0.12 56.3)
-
Step 800
800
#773E08
oklch(42.7% 0.1 56.3)
-
Step 900
900 (this color)
#5B310D
oklch(36% 0.077 56.6)
-
Step 950
950
#38200C
oklch(27% 0.049 58.3)
#5B310D 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) | #3E3608 | 0.060 |
| Deuteranopia (no green cones) | #483F0D | 0.053 |
| Tritanopia (no blue cones) | #64282A | 0.052 |
| Achromatopsia (no color) | #3C3C3C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B310D
#5B310D
oklch(36% 0.077 56.6)
- #024260
#024260
oklch(35.9% 0.077 237)
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 #5B310D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.052
- Mud Brown #60460F ΔE 0.062
- Reddy Brown #6E1005 ΔE 0.069
- Purple Brown #673A3F ΔE 0.070
- Dark Olive #373E02 ΔE 0.079
- Charcoal Grey #3C4142 ΔE 0.084
- Blood #770001 ΔE 0.086
- Green Brown #544E03 ΔE 0.087
Use #5B310D 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.