#B37638
Closest named color: Leather (#AC7434). oklch(61.8% 0.109 63.6), rgb(179, 118, 56).
Aa
Black text reads best on this color (5.56:1).
About this color
#B37638 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.109 and its hue 64°. Its hue sits on the warm side of the wheel. The nearest named color is Leather (#AC7434), ΔE 0.014 away. Black text reads best on it, at 5.56:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Leather (#AC7434) |
| Black text | 5.56:1 |
| White text | 3.77:1 |
Values
| HEX | #B37638 |
| RGB | rgb(179, 118, 56) |
| HSL | hsl(30, 52%, 46%) |
| OKLCH | oklch(61.8% 0.109 63.6) |
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 #B37638 | 3.77:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #B37638 | 5.56:1 | AA | Lc 39.0 | Non-text elements, placeholder text |
| #B37638 text on white | 3.77:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #B37638 text on black | 5.56:1 | AA | Lc -36.6 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F2E8E0
oklch(93.7% 0.015 61.3)
-
Step 200
200
#E8D5C5
oklch(88.4% 0.03 62.5)
-
Step 300
300
#DABA9D
oklch(80.9% 0.054 64.1)
-
Step 400
400
#C69567
oklch(70.6% 0.085 63.9)
-
Step 500
500 (this color)
#B37638
oklch(61.8% 0.109 63.6)
-
Step 600
600
#A36215
oklch(55.7% 0.119 63.6)
-
Step 700
700
#8B5103
oklch(49.2% 0.11 64.1)
-
Step 800
800
#71420B
oklch(42.6% 0.091 63.3)
-
Step 900
900
#5C3813
oklch(37.7% 0.072 62.9)
-
Step 950
950
#36210D
oklch(27% 0.045 62.4)
#B37638 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) | #897B31 | 0.073 |
| Deuteranopia (no green cones) | #988939 | 0.065 |
| Tritanopia (no blue cones) | #C36868 | 0.082 |
| Achromatopsia (no color) | #838383 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B37638
#B37638
oklch(61.8% 0.109 63.6)
- #448CC2
#448CC2
oklch(61.7% 0.109 243.6)
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 #B37638, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leather #AC7434 ΔE 0.014
- Clay Brown #B2713D ΔE 0.015
- Tan Brown #AB7E4C ΔE 0.025
- Tiger's Eye #BC6C25 ΔE 0.026
- Caramel #AF6F09 ΔE 0.031
- Light Brown #AD8150 ΔE 0.031
- Coffee #A6814C ΔE 0.033
- Puce #A57E52 ΔE 0.033
Use #B37638 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.