#A66851
Closest named color: Earth (#A2653E). oklch(57.9% 0.087 41.1), rgb(166, 104, 81).
Aa
Black text reads best on this color (4.72:1).
About this color
#A66851 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.087 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.024 away. Black text reads best on it, at 4.72:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.087) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #A66851 |
| RGB | rgb(166, 104, 81) |
| HSL | hsl(16, 34%, 48%) |
| OKLCH | oklch(57.9% 0.087 41.1) |
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 #A66851 | 4.44:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #A66851 | 4.72:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #A66851 text on white | 4.44:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #A66851 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E8E4
oklch(93.7% 0.011 45.7)
-
Step 200
200
#E7D5CE
oklch(88.6% 0.022 42.6)
-
Step 300
300
#D8B9AE
oklch(81% 0.039 40.5)
-
Step 400
400
#C39483
oklch(70.7% 0.062 40.8)
-
Step 500
500
#B37963
oklch(63% 0.08 41.6)
-
Step 600
600 (this color)
#A66851
oklch(57.9% 0.087 41.1)
-
Step 700
700
#87503C
oklch(49% 0.081 40.6)
-
Step 800
800
#6E4231
oklch(42.7% 0.067 41.8)
-
Step 900
900
#59382C
oklch(37.7% 0.052 40.7)
-
Step 950
950
#34211A
oklch(27% 0.032 41)
#A66851 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) | #78704F | 0.080 |
| Deuteranopia (no green cones) | #877D50 | 0.075 |
| Tritanopia (no blue cones) | #B35E62 | 0.045 |
| Achromatopsia (no color) | #777777 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66851
#A66851
oklch(57.9% 0.087 41.1)
- #32869E
#32869E
oklch(58% 0.087 220.3)
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 #A66851, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.024
- Clay #B66A50 ΔE 0.030
- Pinkish Brown #B17261 ΔE 0.036
- Mocha #9D7651 ΔE 0.039
- Clay Brown #B2713D ΔE 0.044
- Adobe #BD6C48 ΔE 0.045
- Reddish Grey #997570 ΔE 0.047
- Copper #B66325 ΔE 0.048
Use #A66851 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.