#AC6640
Closest named color: Earth (#A2653E). oklch(58% 0.105 48.3), rgb(172, 102, 64).
Aa
Black text reads best on this color (4.72:1).
About this color
#AC6640 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.105 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.019 away. Black text reads best on it, at 4.72:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.105) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #AC6640 |
| RGB | rgb(172, 102, 64) |
| HSL | hsl(21, 46%, 46%) |
| OKLCH | oklch(58% 0.105 48.3) |
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 #AC6640 | 4.44:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #AC6640 | 4.72:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #AC6640 text on white | 4.44:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #AC6640 text on black | 4.72:1 | AA | Lc -31.1 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F2E7E2
oklch(93.5% 0.014 46.2)
-
Step 200
200
#E8D4CB
oklch(88.4% 0.026 45.9)
-
Step 300
300
#DBB8A7
oklch(80.9% 0.047 47.4)
-
Step 400
400
#C89377
oklch(70.7% 0.075 48.9)
-
Step 500
500
#B97754
oklch(63.1% 0.097 48.3)
-
Step 600
600 (this color)
#AC6640
oklch(58% 0.105 48.3)
-
Step 700
700
#8C4E2B
oklch(49.1% 0.097 48.6)
-
Step 800
800
#724025
oklch(42.7% 0.08 47.9)
-
Step 900
900
#5C3723
oklch(37.7% 0.062 48.6)
-
Step 950
950
#362015
oklch(26.9% 0.039 47.1)
#AC6640 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) | #796E3D | 0.090 |
| Deuteranopia (no green cones) | #8A7E40 | 0.083 |
| Tritanopia (no blue cones) | #BB595D | 0.062 |
| Achromatopsia (no color) | #787878 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC6640
#AC6640
oklch(58% 0.105 48.3)
- #1F86AB
#1F86AB
oklch(58.1% 0.104 227.9)
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 #AC6640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.019
- Copper #B66325 ΔE 0.027
- Clay #B66A50 ΔE 0.028
- Clay Brown #B2713D ΔE 0.032
- Adobe #BD6C48 ΔE 0.037
- Orangey Brown #B16002 ΔE 0.039
- Umber #B26400 ΔE 0.040
- Raw Umber #A75E09 ΔE 0.042
Use #AC6640 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.