#A66A2D
Closest named color: Earth (#A2653E). oklch(57.8% 0.108 62.9), rgb(166, 106, 45).
Aa
Black text reads best on this color (4.72:1).
About this color
#A66A2D is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.108 and its hue 63°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.026 away. Black text reads best on it, at 4.72:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.108) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #A66A2D |
| RGB | rgb(166, 106, 45) |
| HSL | hsl(30, 57%, 41%) |
| OKLCH | oklch(57.8% 0.108 62.9) |
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 #A66A2D | 4.44:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #A66A2D | 4.72:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #A66A2D text on white | 4.44:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #A66A2D text on black | 4.72:1 | AA | Lc -31.0 | 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
#F9F5F1
oklch(97.2% 0.007 67.7)
-
Step 100
100
#F1E8E1
oklch(93.6% 0.014 60.6)
-
Step 200
200
#E7D6C7
oklch(88.6% 0.028 63.9)
-
Step 300
300
#D8BAA1
oklch(80.8% 0.049 61.9)
-
Step 400
400
#C4966E
oklch(70.7% 0.078 62.1)
-
Step 500
500
#B47B46
oklch(63% 0.099 62.3)
-
Step 600
600 (this color)
#A66A2D
oklch(57.8% 0.108 62.9)
-
Step 700
700
#885218
oklch(49.1% 0.1 62.6)
-
Step 800
800
#6F4417
oklch(42.8% 0.083 63)
-
Step 900
900
#5A391A
oklch(37.7% 0.065 61.8)
-
Step 950
950
#352210
oklch(27.1% 0.041 63)
#A66A2D 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) | #7D6F26 | 0.073 |
| Deuteranopia (no green cones) | #8B7D2E | 0.066 |
| Tritanopia (no blue cones) | #B55C5D | 0.081 |
| Achromatopsia (no color) | #777777 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66A2D
#A66A2D
oklch(57.8% 0.108 62.9)
- #3780B4
#3780B4
oklch(57.7% 0.108 242.9)
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 #A66A2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.026
- Umber #B26400 ΔE 0.028
- Leather #AC7434 ΔE 0.028
- Orangey Brown #B16002 ΔE 0.030
- Caramel #AF6F09 ΔE 0.030
- Raw Umber #A75E09 ΔE 0.030
- Copper #B66325 ΔE 0.031
- Clay Brown #B2713D ΔE 0.032
Use #A66A2D 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.