#A37B17
Closest named color: Bronze (#A87900). oklch(60.6% 0.118 84.2), rgb(163, 123, 23).
Aa
Black text reads best on this color (5.40:1).
About this color
#A37B17 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 61%, its chroma 0.118 and its hue 84°. Its hue sits on the warm side of the wheel. The nearest named color is Bronze (#A87900), ΔE 0.010 away. Black text reads best on it, at 5.40:1.
| Hue family | Browns |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Bronze (#A87900) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #A37B17 |
| RGB | rgb(163, 123, 23) |
| HSL | hsl(43, 75%, 36%) |
| OKLCH | oklch(60.6% 0.118 84.2) |
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 #A37B17 | 3.88:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #A37B17 | 5.40:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #A37B17 text on white | 3.88:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #A37B17 text on black | 5.40:1 | AA | Lc -35.5 | 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
#F8F5F0
oklch(97.1% 0.007 80.7)
-
Step 100
100
#EFE9DE
oklch(93.6% 0.016 82.8)
-
Step 200
200
#E3D8C2
oklch(88.5% 0.032 84.6)
-
Step 300
300
#D2BE97
oklch(80.9% 0.057 83.9)
-
Step 400
400
#BC9C5B
oklch(70.8% 0.092 83.9)
-
Step 500
500 (this color)
#A37B17
oklch(60.6% 0.118 84.2)
-
Step 600
600
#926C00
oklch(55.5% 0.114 84.1)
-
Step 700
700
#7B5B00
oklch(49.1% 0.101 84.7)
-
Step 800
800
#654A00
oklch(42.7% 0.087 84.5)
-
Step 900
900
#553D01
oklch(37.7% 0.077 83.2)
-
Step 950
950
#322406
oklch(27% 0.049 83)
#A37B17 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) | #8C7B00 | 0.041 |
| Deuteranopia (no green cones) | #96851D | 0.032 |
| Tritanopia (no blue cones) | #B26E69 | 0.106 |
| Achromatopsia (no color) | #818181 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A37B17
#A37B17
oklch(60.6% 0.118 84.2)
- #5E80C9
#5E80C9
oklch(60.7% 0.118 264.2)
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 #A37B17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bronze #A87900 ΔE 0.010
- Mustard Brown #AC7E04 ΔE 0.019
- Golden Brown #B27A01 ΔE 0.025
- Caramel #AF6F09 ΔE 0.034
- Leather #AC7434 ΔE 0.036
- Hazel #8E7618 ΔE 0.039
- Dark Mustard #A88905 ΔE 0.041
- Coffee #A6814C ΔE 0.043
Use #A37B17 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.