#B37537
Closest named color: Leather (#AC7434). oklch(61.6% 0.11 63.1), rgb(179, 117, 55).
Aa
Black text reads best on this color (5.51:1).
About this color
#B37537 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.110 and its hue 63°. Its hue sits on the warm side of the wheel. The nearest named color is Leather (#AC7434), ΔE 0.013 away. Black text reads best on it, at 5.51:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Leather (#AC7434) |
| Black text | 5.51:1 |
| White text | 3.80:1 |
Values
| HEX | #B37537 |
| RGB | rgb(179, 117, 55) |
| HSL | hsl(30, 53%, 46%) |
| OKLCH | oklch(61.6% 0.11 63.1) |
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 #B37537 | 3.80:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #B37537 | 5.51:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #B37537 text on white | 3.80:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #B37537 text on black | 5.51:1 | AA | Lc -36.3 | 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
#F2E8DF
oklch(93.6% 0.016 64.7)
-
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
#C79567
oklch(70.7% 0.086 63.3)
-
Step 500
500 (this color)
#B37537
oklch(61.6% 0.11 63.1)
-
Step 600
600
#A36114
oklch(55.5% 0.119 63)
-
Step 700
700
#8C5002
oklch(49.1% 0.111 62.9)
-
Step 800
800
#72420A
oklch(42.8% 0.092 62.8)
-
Step 900
900
#5C3813
oklch(37.7% 0.072 62.9)
-
Step 950
950
#36210D
oklch(27% 0.045 62.4)
#B37537 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) | #887A30 | 0.075 |
| Deuteranopia (no green cones) | #978838 | 0.066 |
| Tritanopia (no blue cones) | #C36767 | 0.082 |
| Achromatopsia (no color) | #838383 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B37537
#B37537
oklch(61.6% 0.11 63.1)
- #428CC2
#428CC2
oklch(61.7% 0.11 243.1)
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 #B37537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leather #AC7434 ΔE 0.013
- Clay Brown #B2713D ΔE 0.014
- Tiger's Eye #BC6C25 ΔE 0.024
- Tan Brown #AB7E4C ΔE 0.027
- Caramel #AF6F09 ΔE 0.029
- Light Brown #AD8150 ΔE 0.033
- Brown Orange #B96902 ΔE 0.033
- Puce #A57E52 ΔE 0.035
Use #B37537 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.