#A18137
Closest named color: Coffee (#A6814C). oklch(61.9% 0.1 85.5), rgb(161, 129, 55).
Aa
Black text reads best on this color (5.71:1).
About this color
#A18137 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.100 and its hue 86°. Its hue sits on the warm side of the wheel. The nearest named color is Coffee (#A6814C), ΔE 0.024 away. Black text reads best on it, at 5.71:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.100) |
| Temperature | warm |
| Nearest name | Coffee (#A6814C) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #A18137 |
| RGB | rgb(161, 129, 55) |
| HSL | hsl(42, 49%, 42%) |
| OKLCH | oklch(61.9% 0.1 85.5) |
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 #A18137 | 3.67:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #A18137 | 5.71:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #A18137 text on white | 3.67:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #A18137 text on black | 5.71:1 | AA | Lc -37.4 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9DF
oklch(93.5% 0.014 84.6)
-
Step 200
200
#E1D8C5
oklch(88.4% 0.027 85.7)
-
Step 300
300
#CFBF9D
oklch(80.9% 0.049 85.8)
-
Step 400
400
#B79D67
oklch(70.7% 0.078 84.8)
-
Step 500
500 (this color)
#A18137
oklch(61.9% 0.1 85.5)
-
Step 600
600
#906E11
oklch(55.7% 0.109 85.9)
-
Step 700
700
#7A5B00
oklch(49% 0.1 85.4)
-
Step 800
800
#644B08
oklch(42.8% 0.084 85.4)
-
Step 900
900
#513F12
oklch(37.8% 0.066 86.5)
-
Step 950
950
#30250D
oklch(27.1% 0.041 84.7)
#A18137 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) | #90802F | 0.030 |
| Deuteranopia (no green cones) | #97893A | 0.025 |
| Tritanopia (no blue cones) | #AE7671 | 0.090 |
| Achromatopsia (no color) | #858585 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A18137
#A18137
oklch(61.9% 0.1 85.5)
- #6984C2
#6984C2
oklch(61.9% 0.099 265.6)
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 #A18137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Coffee #A6814C ΔE 0.024
- Mustard Brown #AC7E04 ΔE 0.028
- Bronze #A87900 ΔE 0.029
- Tan Brown #AB7E4C ΔE 0.032
- Puce #A57E52 ΔE 0.034
- Golden Brown #B27A01 ΔE 0.035
- Dark Tan #AF884A ΔE 0.035
- Light Brown #AD8150 ΔE 0.035
Use #A18137 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.