#A66B28
Closest named color: Caramel (#AF6F09). oklch(57.9% 0.11 65.4), rgb(166, 107, 40).
Aa
Black text reads best on this color (4.75:1).
About this color
#A66B28 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.110 and its hue 65°. Its hue sits on the warm side of the wheel. The nearest named color is Caramel (#AF6F09), ΔE 0.026 away. Black text reads best on it, at 4.75:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Caramel (#AF6F09) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #A66B28 |
| RGB | rgb(166, 107, 40) |
| HSL | hsl(32, 61%, 40%) |
| OKLCH | oklch(57.9% 0.11 65.4) |
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 #A66B28 | 4.41:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #A66B28 | 4.75:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #A66B28 text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #A66B28 text on black | 4.75:1 | 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
#F9F5F1
oklch(97.2% 0.007 67.7)
-
Step 100
100
#F1E8E0
oklch(93.6% 0.015 64.3)
-
Step 200
200
#E6D6C7
oklch(88.5% 0.027 65.6)
-
Step 300
300
#D8BBA0
oklch(81% 0.05 65)
-
Step 400
400
#C3976B
oklch(70.7% 0.079 66)
-
Step 500
500
#B37C42
oklch(63.1% 0.101 65.6)
-
Step 600
600 (this color)
#A66B28
oklch(57.9% 0.11 65.4)
-
Step 700
700
#885311
oklch(49.2% 0.103 65.4)
-
Step 800
800
#6E4412
oklch(42.7% 0.085 65.7)
-
Step 900
900
#593A17
oklch(37.7% 0.066 66.5)
-
Step 950
950
#34220F
oklch(27% 0.041 66)
#A66B28 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) | #7E701F | 0.072 |
| Deuteranopia (no green cones) | #8C7D29 | 0.063 |
| Tritanopia (no blue cones) | #B55D5D | 0.085 |
| Achromatopsia (no color) | #787878 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66B28
#A66B28
oklch(57.9% 0.11 65.4)
- #3A80B7
#3A80B7
oklch(58% 0.11 245.1)
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 #A66B28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Caramel #AF6F09 ΔE 0.026
- Umber #B26400 ΔE 0.026
- Leather #AC7434 ΔE 0.026
- Orangey Brown #B16002 ΔE 0.030
- Earth #A2653E ΔE 0.031
- Raw Umber #A75E09 ΔE 0.031
- Clay Brown #B2713D ΔE 0.033
- Copper #B66325 ΔE 0.033
Use #A66B28 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.