#A37339
Closest named color: Leather (#AC7434). oklch(59.3% 0.096 69.2), rgb(163, 115, 57).
Aa
Black text reads best on this color (5.06:1).
About this color
#A37339 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 59%, its chroma 0.096 and its hue 69°. 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 5.06:1.
| Hue family | Browns |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.096) |
| Temperature | warm |
| Nearest name | Leather (#AC7434) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #A37339 |
| RGB | rgb(163, 115, 57) |
| HSL | hsl(33, 48%, 43%) |
| OKLCH | oklch(59.3% 0.096 69.2) |
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 #A37339 | 4.14:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #A37339 | 5.06:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #A37339 text on white | 4.14:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #A37339 text on black | 5.06:1 | AA | Lc -33.3 | 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 600.
-
Step 50
50
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#F0E9E1
oklch(93.7% 0.013 71.3)
-
Step 200
200
#E4D7C9
oklch(88.6% 0.024 69.6)
-
Step 300
300
#D3BCA3
oklch(80.8% 0.043 69.5)
-
Step 400
400
#BD9971
oklch(70.6% 0.069 69.3)
-
Step 500
500
#AC804C
oklch(63.2% 0.088 69.7)
-
Step 600
600 (this color)
#A37339
oklch(59.3% 0.096 69.2)
-
Step 700
700
#815620
oklch(49% 0.089 68.8)
-
Step 800
800
#69471D
oklch(42.7% 0.074 69.1)
-
Step 900
900
#553C1D
oklch(37.7% 0.058 70.4)
-
Step 950
950
#322312
oklch(27% 0.036 68.7)
#A37339 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) | #837633 | 0.056 |
| Deuteranopia (no green cones) | #8F813A | 0.048 |
| Tritanopia (no blue cones) | #B16766 | 0.078 |
| Achromatopsia (no color) | #7D7D7D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A37339
#A37339
oklch(59.3% 0.096 69.2)
- #4E82B5
#4E82B5
oklch(59.2% 0.096 249.3)
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 #A37339, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leather #AC7434 ΔE 0.016
- Mocha #9D7651 ΔE 0.026
- Clay Brown #B2713D ΔE 0.028
- Caramel #AF6F09 ΔE 0.032
- Puce #A57E52 ΔE 0.034
- Tan Brown #AB7E4C ΔE 0.035
- Coffee #A6814C ΔE 0.038
- Earth #A2653E ΔE 0.039
Use #A37339 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.