#A66B59
Closest named color: Pinkish Brown (#B17261). oklch(58.6% 0.081 37.7), rgb(166, 107, 89).
Aa
Black text reads best on this color (4.86:1).
About this color
#A66B59 is a medium-dark, moderately saturated red. In OKLCH its lightness is 59%, its chroma 0.081 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Pinkish Brown (#B17261), ΔE 0.028 away. Black text reads best on it, at 4.86:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Pinkish Brown (#B17261) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #A66B59 |
| RGB | rgb(166, 107, 89) |
| HSL | hsl(14, 30%, 50%) |
| OKLCH | oklch(58.6% 0.081 37.7) |
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 #A66B59 | 4.31:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #A66B59 | 4.86:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #A66B59 text on white | 4.31:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #A66B59 text on black | 4.86:1 | AA | Lc -32.0 | 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
#F1E8E5
oklch(93.7% 0.011 39.4)
-
Step 200
200
#E6D5D0
oklch(88.5% 0.02 37)
-
Step 300
300
#D7B9B0
oklch(80.9% 0.037 37.3)
-
Step 400
400
#C29587
oklch(70.8% 0.058 38)
-
Step 500
500
#B17A69
oklch(63.1% 0.074 37.9)
-
Step 600
600 (this color)
#A66B59
oklch(58.6% 0.081 37.7)
-
Step 700
700
#855141
oklch(49% 0.075 37.9)
-
Step 800
800
#6D4336
oklch(42.9% 0.062 38)
-
Step 900
900
#58382F
oklch(37.6% 0.049 36.4)
-
Step 950
950
#34211C
oklch(27% 0.031 35.3)
#A66B59 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) | #797258 | 0.077 |
| Deuteranopia (no green cones) | #877E58 | 0.071 |
| Tritanopia (no blue cones) | #B36266 | 0.040 |
| Achromatopsia (no color) | #7A7A7A | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66B59
#A66B59
oklch(58.6% 0.081 37.7)
- #3B889C
#3B889C
oklch(58.7% 0.081 217.6)
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 #A66B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pinkish Brown #B17261 ΔE 0.028
- Clay #B66A50 ΔE 0.029
- Earth #A2653E ΔE 0.034
- Mocha #9D7651 ΔE 0.037
- Reddish Grey #997570 ΔE 0.038
- Adobe #BD6C48 ΔE 0.045
- Clay Brown #B2713D ΔE 0.046
- Dusky Rose #BA6873 ΔE 0.054
Use #A66B59 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.