#AC643B
Closest named color: Earth (#A2653E). oklch(57.6% 0.108 49.1), rgb(172, 100, 59).
Aa
Black text reads best on this color (4.64:1).
About this color
#AC643B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.108 and its hue 49°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.018 away. Black text reads best on it, at 4.64:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.108) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #AC643B |
| RGB | rgb(172, 100, 59) |
| HSL | hsl(22, 49%, 45%) |
| OKLCH | oklch(57.6% 0.108 49.1) |
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 #AC643B | 4.52:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #AC643B | 4.64:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #AC643B text on white | 4.52:1 | AA | Lc 71.1 | Content text, not long reading |
| #AC643B text on black | 4.64:1 | AA | Lc -30.5 | 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 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
#E9D4CA
oklch(88.4% 0.027 47.2)
-
Step 300
300
#DCB8A5
oklch(80.9% 0.049 49.4)
-
Step 400
400
#C99275
oklch(70.6% 0.078 48.8)
-
Step 500
500
#BA7651
oklch(63% 0.1 48.8)
-
Step 600
600 (this color)
#AC643B
oklch(57.6% 0.108 49.1)
-
Step 700
700
#8E4D27
oklch(49.1% 0.102 49)
-
Step 800
800
#734022
oklch(42.8% 0.083 49.6)
-
Step 900
900
#5D3621
oklch(37.6% 0.065 48.3)
-
Step 950
950
#372014
oklch(27% 0.041 48)
#AC643B 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) | #786D37 | 0.093 |
| Deuteranopia (no green cones) | #897D3A | 0.086 |
| Tritanopia (no blue cones) | #BC565A | 0.065 |
| Achromatopsia (no color) | #767676 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC643B
#AC643B
oklch(57.6% 0.108 49.1)
- #1684AC
#1684AC
oklch(57.5% 0.109 229.5)
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 #AC643B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.018
- Copper #B66325 ΔE 0.025
- Clay #B66A50 ΔE 0.033
- Orangey Brown #B16002 ΔE 0.034
- Clay Brown #B2713D ΔE 0.035
- Raw Umber #A75E09 ΔE 0.036
- Umber #B26400 ΔE 0.037
- Adobe #BD6C48 ΔE 0.040
Use #AC643B 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.