#AC642A
Closest named color: Copper (#B66325). oklch(57.4% 0.117 56), rgb(172, 100, 42).
Aa
Black text reads best on this color (4.61:1).
About this color
#AC642A is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.117 and its hue 56°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.018 away. Black text reads best on it, at 4.61:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.117) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.61:1 |
| White text | 4.55:1 |
Values
| HEX | #AC642A |
| RGB | rgb(172, 100, 42) |
| HSL | hsl(27, 61%, 42%) |
| OKLCH | oklch(57.4% 0.117 56) |
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 #AC642A | 4.55:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #AC642A | 4.61:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #AC642A text on white | 4.55:1 | AA | Lc 71.3 | Content text, not long reading |
| #AC642A text on black | 4.61:1 | AA | Lc -30.4 | 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 600.
-
Step 50
50
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F2E7E0
oklch(93.5% 0.015 54.9)
-
Step 200
200
#E9D5C7
oklch(88.6% 0.029 57.3)
-
Step 300
300
#DCB9A0
oklch(81% 0.053 57.4)
-
Step 400
400
#CA936D
oklch(70.8% 0.085 55.5)
-
Step 500
500
#BB7745
oklch(63.1% 0.108 55.6)
-
Step 600
600 (this color)
#AC642A
oklch(57.4% 0.117 56)
-
Step 700
700
#8E4E16
oklch(49.1% 0.108 56.3)
-
Step 800
800
#744015
oklch(42.8% 0.091 55.9)
-
Step 900
900
#5E3719
oklch(37.8% 0.071 56)
-
Step 950
950
#372010
oklch(26.9% 0.044 54.5)
#AC642A 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) | #796C23 | 0.092 |
| Deuteranopia (no green cones) | #8A7C2A | 0.083 |
| Tritanopia (no blue cones) | #BC5458 | 0.080 |
| Achromatopsia (no color) | #767676 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC642A
#AC642A
oklch(57.4% 0.117 56)
- #1782B4
#1782B4
oklch(57.4% 0.117 235.9)
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 #AC642A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.018
- Orangey Brown #B16002 ΔE 0.019
- Umber #B26400 ΔE 0.022
- Raw Umber #A75E09 ΔE 0.024
- Earth #A2653E ΔE 0.024
- Brown Orange #B96902 ΔE 0.034
- Clay Brown #B2713D ΔE 0.035
- Orange Brown #BE6400 ΔE 0.036
Use #AC642A 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.