#5B381B
Closest named color: Mud Brown (#60460F). oklch(37.6% 0.066 58.5), rgb(91, 56, 27).
Aa
White text reads best on this color (10.36:1).
About this color
#5B381B is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.066 and its hue 58°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.047 away. White text reads best on it, at 10.36:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.02:1 |
| White text | 10.36:1 |
Values
| HEX | #5B381B |
| RGB | rgb(91, 56, 27) |
| HSL | hsl(27, 54%, 23%) |
| OKLCH | oklch(37.6% 0.066 58.5) |
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 #5B381B | 10.36:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #5B381B | 2.02:1 | Fails | Lc 10.1 | Not readable |
| #5B381B text on white | 10.36:1 | AAA | Lc 93.9 | Preferred for body text |
| #5B381B text on black | 2.02:1 | Fails | Lc -8.7 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F1E8E1
oklch(93.6% 0.014 60.6)
-
Step 200
200
#E8D5C8
oklch(88.5% 0.028 56.7)
-
Step 300
300
#DABAA2
oklch(81% 0.049 58.9)
-
Step 400
400
#C6956F
oklch(70.7% 0.079 58.8)
-
Step 500
500
#B77A48
oklch(63.2% 0.101 58.9)
-
Step 600
600
#A26129
oklch(55.5% 0.11 58)
-
Step 700
700
#8A501C
oklch(49% 0.101 58.3)
-
Step 800
800
#714219
oklch(42.7% 0.085 58.3)
-
Step 900
900 (this color)
#5B381B
oklch(37.6% 0.066 58.5)
-
Step 950
950
#362111
oklch(27% 0.042 57.1)
#5B381B 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) | #433B18 | 0.047 |
| Deuteranopia (no green cones) | #4B431B | 0.043 |
| Tritanopia (no blue cones) | #643131 | 0.045 |
| Achromatopsia (no color) | #404040 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B381B
#5B381B
oklch(37.6% 0.066 58.5)
- #1A4660
#1A4660
oklch(37.6% 0.065 238)
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 #5B381B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.047
- Chestnut #742802 ΔE 0.057
- Purple Brown #673A3F ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.072
- Green Brown #544E03 ΔE 0.074
- Dark Olive #373E02 ΔE 0.077
- Reddy Brown #6E1005 ΔE 0.082
- Onyx #343A40 ΔE 0.085
Use #5B381B 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.