#A66A42
Closest named color: Earth (#A2653E). oklch(58% 0.095 53.5), rgb(166, 106, 66).
Aa
Black text reads best on this color (4.76:1).
About this color
#A66A42 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.095 and its hue 53°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.015 away. Black text reads best on it, at 4.76:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.095) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.76:1 |
| White text | 4.41:1 |
Values
| HEX | #A66A42 |
| RGB | rgb(166, 106, 66) |
| HSL | hsl(24, 43%, 45%) |
| OKLCH | oklch(58% 0.095 53.5) |
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 #A66A42 | 4.41:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #A66A42 | 4.76:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #A66A42 text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #A66A42 text on black | 4.76:1 | AA | Lc -31.3 | 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
#F1E8E2
oklch(93.6% 0.013 56.2)
-
Step 200
200
#E6D5CB
oklch(88.4% 0.023 52.7)
-
Step 300
300
#D8BAA7
oklch(81% 0.043 54.3)
-
Step 400
400
#C39579
oklch(70.6% 0.068 52.6)
-
Step 500
500
#B37B56
oklch(63.2% 0.087 54)
-
Step 600
600 (this color)
#A66A42
oklch(58% 0.095 53.5)
-
Step 700
700
#87522D
oklch(49.1% 0.088 54)
-
Step 800
800
#6E4326
oklch(42.7% 0.073 53.5)
-
Step 900
900
#593924
oklch(37.7% 0.056 53.5)
-
Step 950
950
#342115
oklch(26.8% 0.036 52.9)
#A66A42 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) | #7B703E | 0.075 |
| Deuteranopia (no green cones) | #897D42 | 0.068 |
| Tritanopia (no blue cones) | #B45E60 | 0.062 |
| Achromatopsia (no color) | #787878 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66A42
#A66A42
oklch(58% 0.095 53.5)
- #3783AA
#3783AA
oklch(58% 0.095 234.2)
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 #A66A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.015
- Clay Brown #B2713D ΔE 0.031
- Mocha #9D7651 ΔE 0.032
- Clay #B66A50 ΔE 0.035
- Copper #B66325 ΔE 0.035
- Leather #AC7434 ΔE 0.036
- Umber #B26400 ΔE 0.043
- Orangey Brown #B16002 ΔE 0.043
Use #A66A42 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.