#B37D39
Closest named color: Tan Brown (#AB7E4C). oklch(63.1% 0.107 69.8), rgb(179, 125, 57).
Aa
Black text reads best on this color (5.90:1).
About this color
#B37D39 is a medium-light, moderately saturated orange. In OKLCH its lightness is 63%, its chroma 0.107 and its hue 70°. Its hue sits on the warm side of the wheel. The nearest named color is Tan Brown (#AB7E4C), ΔE 0.021 away. Black text reads best on it, at 5.90:1.
| Hue family | Oranges |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.107) |
| Temperature | warm |
| Nearest name | Tan Brown (#AB7E4C) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #B37D39 |
| RGB | rgb(179, 125, 57) |
| HSL | hsl(33, 52%, 46%) |
| OKLCH | oklch(63.1% 0.107 69.8) |
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 #B37D39 | 3.55:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #B37D39 | 5.90:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #B37D39 text on white | 3.55:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #B37D39 text on black | 5.90:1 | AA | Lc -38.7 | 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
#E6D6C5
oklch(88.4% 0.029 69.1)
-
Step 300
300
#D7BB9C
oklch(80.8% 0.053 69.8)
-
Step 400
400
#C39766
oklch(70.7% 0.084 68.8)
-
Step 500
500 (this color)
#B37D39
oklch(63.1% 0.107 69.8)
-
Step 600
600
#9E650C
oklch(55.6% 0.117 69.9)
-
Step 700
700
#875400
oklch(49.2% 0.107 69.6)
-
Step 800
800
#6E4505
oklch(42.8% 0.09 70.2)
-
Step 900
900
#593A11
oklch(37.7% 0.07 69.8)
-
Step 950
950
#34220C
oklch(26.9% 0.044 69.4)
#B37D39 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) | #8F8032 | 0.062 |
| Deuteranopia (no green cones) | #9C8D3B | 0.054 |
| Tritanopia (no blue cones) | #C3706E | 0.087 |
| Achromatopsia (no color) | #888888 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B37D39
#B37D39
oklch(63.1% 0.107 69.8)
- #538EC8
#538EC8
oklch(63.1% 0.108 249.5)
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 #B37D39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tan Brown #AB7E4C ΔE 0.021
- Light Brown #AD8150 ΔE 0.023
- Coffee #A6814C ΔE 0.026
- Leather #AC7434 ΔE 0.027
- Dark Tan #AF884A ΔE 0.028
- Golden Brown #B27A01 ΔE 0.028
- Puce #A57E52 ΔE 0.032
- Clay Brown #B2713D ΔE 0.033
Use #B37D39 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.