#A37D37
Closest named color: Coffee (#A6814C). oklch(61.3% 0.099 80.3), rgb(163, 125, 55).
Aa
Black text reads best on this color (5.54:1).
About this color
#A37D37 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 61%, its chroma 0.099 and its hue 80°. Its hue sits on the warm side of the wheel. The nearest named color is Coffee (#A6814C), ΔE 0.022 away. Black text reads best on it, at 5.54:1.
| Hue family | Browns |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.099) |
| Temperature | warm |
| Nearest name | Coffee (#A6814C) |
| Black text | 5.54:1 |
| White text | 3.78:1 |
Values
| HEX | #A37D37 |
| RGB | rgb(163, 125, 55) |
| HSL | hsl(39, 50%, 43%) |
| OKLCH | oklch(61.3% 0.099 80.3) |
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 #A37D37 | 3.78:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #A37D37 | 5.54:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #A37D37 text on white | 3.78:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #A37D37 text on black | 5.54:1 | AA | Lc -36.4 | 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
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9E0
oklch(93.6% 0.014 78.3)
-
Step 200
200
#E3D8C6
oklch(88.6% 0.027 80.2)
-
Step 300
300
#D1BE9E
oklch(80.9% 0.048 80.7)
-
Step 400
400
#BA9C68
oklch(70.8% 0.078 80.7)
-
Step 500
500 (this color)
#A37D37
oklch(61.3% 0.099 80.3)
-
Step 600
600
#946B16
oklch(55.6% 0.108 79.9)
-
Step 700
700
#7E5904
oklch(49.1% 0.1 80)
-
Step 800
800
#66490B
oklch(42.6% 0.083 80.5)
-
Step 900
900
#533D14
oklch(37.6% 0.064 79.9)
-
Step 950
950
#31240D
oklch(27% 0.041 79.8)
#A37D37 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) | #8C7E2F | 0.040 |
| Deuteranopia (no green cones) | #958739 | 0.034 |
| Tritanopia (no blue cones) | #B1726E | 0.087 |
| Achromatopsia (no color) | #838383 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A37D37
#A37D37
oklch(61.3% 0.099 80.3)
- #6184C0
#6184C0
oklch(61.3% 0.1 260.8)
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 #A37D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Coffee #A6814C ΔE 0.022
- Leather #AC7434 ΔE 0.026
- Bronze #A87900 ΔE 0.027
- Tan Brown #AB7E4C ΔE 0.027
- Puce #A57E52 ΔE 0.029
- Mustard Brown #AC7E04 ΔE 0.030
- Golden Brown #B27A01 ΔE 0.033
- Light Brown #AD8150 ΔE 0.033
Use #A37D37 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.