#AC6637
Closest named color: Earth (#A2653E). oklch(57.9% 0.109 52.7), rgb(172, 102, 55).
Aa
Black text reads best on this color (4.70:1).
About this color
#AC6637 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.109 and its hue 53°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.020 away. Black text reads best on it, at 4.70:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.70:1 |
| White text | 4.45:1 |
Values
| HEX | #AC6637 |
| RGB | rgb(172, 102, 55) |
| HSL | hsl(24, 52%, 45%) |
| OKLCH | oklch(57.9% 0.109 52.7) |
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 #AC6637 | 4.45:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #AC6637 | 4.70:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #AC6637 text on white | 4.45:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #AC6637 text on black | 4.70:1 | AA | Lc -31.0 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F2E7E1
oklch(93.5% 0.014 50.8)
-
Step 200
200
#E9D5C9
oklch(88.6% 0.028 53.1)
-
Step 300
300
#DBB9A4
oklch(81% 0.049 53.5)
-
Step 400
400
#C89372
oklch(70.6% 0.079 53)
-
Step 500
500
#B9774D
oklch(63% 0.101 52.4)
-
Step 600
600 (this color)
#AC6637
oklch(57.9% 0.109 52.7)
-
Step 700
700
#8D4E22
oklch(49.1% 0.102 52.6)
-
Step 800
800
#72401E
oklch(42.6% 0.084 52.6)
-
Step 900
900
#5D371E
oklch(37.7% 0.066 52.7)
-
Step 950
950
#362012
oklch(26.8% 0.042 52.6)
#AC6637 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) | #7A6E32 | 0.089 |
| Deuteranopia (no green cones) | #8B7D37 | 0.080 |
| Tritanopia (no blue cones) | #BC585B | 0.070 |
| Achromatopsia (no color) | #777777 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC6637
#AC6637
oklch(57.9% 0.109 52.7)
- #2084B0
#2084B0
oklch(57.9% 0.11 233)
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 #AC6637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.020
- Copper #B66325 ΔE 0.021
- Orangey Brown #B16002 ΔE 0.030
- Clay Brown #B2713D ΔE 0.030
- Umber #B26400 ΔE 0.031
- Raw Umber #A75E09 ΔE 0.034
- Clay #B66A50 ΔE 0.035
- Leather #AC7434 ΔE 0.037
Use #AC6637 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.