#A66541
Closest named color: Earth (#A2653E). oklch(57.1% 0.098 48.9), rgb(166, 101, 65).
Aa
White text reads best on this color (4.60:1).
About this color
#A66541 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.098 and its hue 49°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.008 away. White text reads best on it, at 4.60:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.098) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.55:1 |
| White text | 4.60:1 |
Values
| HEX | #A66541 |
| RGB | rgb(166, 101, 65) |
| HSL | hsl(21, 44%, 45%) |
| OKLCH | oklch(57.1% 0.098 48.9) |
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 #A66541 | 4.60:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #A66541 | 4.55:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #A66541 text on white | 4.60:1 | AA | Lc 71.8 | Content text, not long reading |
| #A66541 text on black | 4.55:1 | AA | Lc -29.9 | Dividers and decoration only |
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
#F1E8E3
oklch(93.7% 0.012 51.3)
-
Step 200
200
#E7D5CB
oklch(88.5% 0.024 51.1)
-
Step 300
300
#D9B9A8
oklch(80.9% 0.044 49.7)
-
Step 400
400
#C6947A
oklch(70.8% 0.071 48.6)
-
Step 500
500
#B67958
oklch(63.2% 0.09 49)
-
Step 600
600 (this color)
#A66541
oklch(57.1% 0.098 48.9)
-
Step 700
700
#8A502F
oklch(49.2% 0.091 49.1)
-
Step 800
800
#704128
oklch(42.6% 0.076 47.9)
-
Step 900
900
#5B3825
oklch(37.8% 0.058 48.8)
-
Step 950
950
#352116
oklch(27% 0.037 49.5)
#A66541 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) | #776C3E | 0.083 |
| Deuteranopia (no green cones) | #867B41 | 0.077 |
| Tritanopia (no blue cones) | #B5595C | 0.059 |
| Achromatopsia (no color) | #757575 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66541
#A66541
oklch(57.1% 0.098 48.9)
- #2882A6
#2882A6
oklch(57.1% 0.099 229.3)
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 #A66541, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.008
- Copper #B66325 ΔE 0.036
- Clay #B66A50 ΔE 0.037
- Sepia #985E2B ΔE 0.039
- Raw Umber #A75E09 ΔE 0.040
- Clay Brown #B2713D ΔE 0.041
- Orangey Brown #B16002 ΔE 0.042
- Mocha #9D7651 ΔE 0.043
Use #A66541 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.