#B37730
Closest named color: Leather (#AC7434). oklch(61.9% 0.114 67.1), rgb(179, 119, 48).
Aa
Black text reads best on this color (5.59:1).
About this color
#B37730 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.114 and its hue 67°. Its hue sits on the warm side of the wheel. The nearest named color is Leather (#AC7434), ΔE 0.016 away. Black text reads best on it, at 5.59:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.114) |
| Temperature | warm |
| Nearest name | Leather (#AC7434) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #B37730 |
| RGB | rgb(179, 119, 48) |
| HSL | hsl(33, 58%, 45%) |
| OKLCH | oklch(61.9% 0.114 67.1) |
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 #B37730 | 3.75:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #B37730 | 5.59:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #B37730 text on white | 3.75:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #B37730 text on black | 5.59:1 | AA | Lc -36.8 | 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
#F9F5F0
oklch(97.2% 0.008 73.7)
-
Step 100
100
#F1E8DF
oklch(93.6% 0.016 67.6)
-
Step 200
200
#E8D6C4
oklch(88.6% 0.031 67.4)
-
Step 300
300
#DABA9B
oklch(80.9% 0.056 66)
-
Step 400
400
#C69663
oklch(70.7% 0.089 67.3)
-
Step 500
500 (this color)
#B37730
oklch(61.9% 0.114 67.1)
-
Step 600
600
#A26300
oklch(55.7% 0.123 67.4)
-
Step 700
700
#895200
oklch(49.1% 0.109 66.6)
-
Step 800
800
#714300
oklch(42.8% 0.095 66.9)
-
Step 900
900
#5B390E
oklch(37.7% 0.074 67.6)
-
Step 950
950
#36220A
oklch(27.2% 0.048 68.1)
#B37730 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) | #8B7B27 | 0.070 |
| Deuteranopia (no green cones) | #998931 | 0.062 |
| Tritanopia (no blue cones) | #C36968 | 0.089 |
| Achromatopsia (no color) | #848484 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B37730
#B37730
oklch(61.9% 0.114 67.1)
- #478BC6
#478BC6
oklch(61.8% 0.113 247.1)
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 #B37730, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leather #AC7434 ΔE 0.016
- Clay Brown #B2713D ΔE 0.023
- Golden Brown #B27A01 ΔE 0.026
- Caramel #AF6F09 ΔE 0.027
- Tan Brown #AB7E4C ΔE 0.028
- Tiger's Eye #BC6C25 ΔE 0.028
- Light Brown #AD8150 ΔE 0.033
- Bronze #A87900 ΔE 0.034
Use #B37730 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.