#5B371C
Closest named color: Mud Brown (#60460F). oklch(37.4% 0.065 56), rgb(91, 55, 28).
Aa
White text reads best on this color (10.45:1).
About this color
#5B371C is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.065 and its hue 56°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.051 away. White text reads best on it, at 10.45:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #5B371C |
| RGB | rgb(91, 55, 28) |
| HSL | hsl(26, 53%, 23%) |
| OKLCH | oklch(37.4% 0.065 56) |
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 #5B371C | 10.45:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #5B371C | 2.00:1 | Fails | Lc 9.8 | Not readable |
| #5B371C text on white | 10.45:1 | AAA | Lc 94.1 | Preferred for body text |
| #5B371C text on black | 2.00:1 | Fails | Lc -8.5 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F2E8E1
oklch(93.7% 0.014 57.6)
-
Step 200
200
#E8D5C8
oklch(88.5% 0.028 56.7)
-
Step 300
300
#DAB9A3
oklch(80.9% 0.049 55.6)
-
Step 400
400
#C79471
oklch(70.7% 0.078 55.5)
-
Step 500
500
#B8794B
oklch(63.2% 0.1 55.9)
-
Step 600
600
#A3612C
oklch(55.7% 0.109 56.5)
-
Step 700
700
#8B4F1F
oklch(49% 0.101 55.7)
-
Step 800
800
#71411C
oklch(42.6% 0.084 55.5)
-
Step 900
900 (this color)
#5B371C
oklch(37.4% 0.065 56)
-
Step 950
950
#362112
oklch(27.1% 0.041 55.6)
#5B371C 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) | #423B19 | 0.050 |
| Deuteranopia (no green cones) | #4A431C | 0.046 |
| Tritanopia (no blue cones) | #643031 | 0.044 |
| Achromatopsia (no color) | #3F3F3F | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B371C
#5B371C
oklch(37.4% 0.065 56)
- #18465F
#18465F
oklch(37.5% 0.065 236.2)
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 #5B371C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.051
- Chestnut #742802 ΔE 0.056
- Purple Brown #673A3F ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.072
- Green Brown #544E03 ΔE 0.078
- Dark Olive #373E02 ΔE 0.079
- Reddy Brown #6E1005 ΔE 0.079
- Onyx #343A40 ΔE 0.084
Use #5B371C 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.