#A66F58
Closest named color: Pinkish Brown (#B17261). oklch(59.4% 0.078 43.5), rgb(166, 111, 88).
Aa
Black text reads best on this color (5.03:1).
About this color
#A66F58 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 59%, its chroma 0.078 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Pinkish Brown (#B17261), ΔE 0.024 away. Black text reads best on it, at 5.03:1.
| Hue family | Browns |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Pinkish Brown (#B17261) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #A66F58 |
| RGB | rgb(166, 111, 88) |
| HSL | hsl(18, 31%, 50%) |
| OKLCH | oklch(59.4% 0.078 43.5) |
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 #A66F58 | 4.16:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #A66F58 | 5.03:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #A66F58 text on white | 4.16:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #A66F58 text on black | 5.03:1 | AA | Lc -33.1 | 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 500.
-
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
#E6D5CE
oklch(88.5% 0.021 43.8)
-
Step 300
300
#D7B9AD
oklch(80.8% 0.038 43)
-
Step 400
400
#C29582
oklch(70.7% 0.061 44)
-
Step 500
500 (this color)
#A66F58
oklch(59.4% 0.078 43.5)
-
Step 600
600
#9D624A
oklch(55.5% 0.085 42.8)
-
Step 700
700
#86513B
oklch(49% 0.079 43.1)
-
Step 800
800
#6D4331
oklch(42.8% 0.065 43.8)
-
Step 900
900
#59392B
oklch(37.8% 0.051 44.4)
-
Step 950
950
#342119
oklch(26.9% 0.033 43.7)
#A66F58 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) | #7D7556 | 0.070 |
| Deuteranopia (no green cones) | #8A8158 | 0.065 |
| Tritanopia (no blue cones) | #B36669 | 0.044 |
| Achromatopsia (no color) | #7C7C7C | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66F58
#A66F58
oklch(59.4% 0.078 43.5)
- #4489A1
#4489A1
oklch(59.5% 0.078 223.3)
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 #A66F58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pinkish Brown #B17261 ΔE 0.024
- Mocha #9D7651 ΔE 0.028
- Clay #B66A50 ΔE 0.029
- Earth #A2653E ΔE 0.036
- Reddish Grey #997570 ΔE 0.036
- Clay Brown #B2713D ΔE 0.039
- Adobe #BD6C48 ΔE 0.042
- Puce #A57E52 ΔE 0.044
Use #A66F58 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.