#A66A64
Closest named color: Pinkish Brown (#B17261). oklch(58.7% 0.078 25.9), rgb(166, 106, 100).
Aa
Black text reads best on this color (4.86:1).
About this color
#A66A64 is a medium-dark, moderately saturated red. In OKLCH its lightness is 59%, its chroma 0.078 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Pinkish Brown (#B17261), ΔE 0.031 away. Black text reads best on it, at 4.86:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Pinkish Brown (#B17261) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #A66A64 |
| RGB | rgb(166, 106, 100) |
| HSL | hsl(5, 27%, 52%) |
| OKLCH | oklch(58.7% 0.078 25.9) |
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 #A66A64 | 4.31:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #A66A64 | 4.86:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #A66A64 text on white | 4.31:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #A66A64 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E6
oklch(93.6% 0.011 24.3)
-
Step 200
200
#E6D5D2
oklch(88.6% 0.019 29.6)
-
Step 300
300
#D7B8B5
oklch(80.9% 0.036 24.5)
-
Step 400
400
#C1948E
oklch(70.7% 0.055 27.2)
-
Step 500
500
#B17973
oklch(63.2% 0.071 26.1)
-
Step 600
600 (this color)
#A66A64
oklch(58.7% 0.078 25.9)
-
Step 700
700
#85504B
oklch(49.1% 0.072 25.8)
-
Step 800
800
#6C423E
oklch(42.7% 0.059 25.7)
-
Step 900
900
#583834
oklch(37.7% 0.047 27.3)
-
Step 950
950
#34211F
oklch(27.1% 0.03 25.9)
#A66A64 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) | #777263 | 0.080 |
| Deuteranopia (no green cones) | #857E63 | 0.074 |
| Tritanopia (no blue cones) | #B26269 | 0.030 |
| Achromatopsia (no color) | #7A7A7A | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66A64
#A66A64
oklch(58.7% 0.078 25.9)
- #3A8A93
#3A8A93
oklch(58.8% 0.078 205.4)
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 #A66A64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pinkish Brown #B17261 ΔE 0.031
- Reddish Grey #997570 ΔE 0.033
- Clay #B66A50 ΔE 0.038
- Dusky Rose #BA6873 ΔE 0.043
- Mauve #AE7181 ΔE 0.044
- Earth #A2653E ΔE 0.048
- Mocha #9D7651 ΔE 0.050
- Adobe #BD6C48 ΔE 0.055
Use #A66A64 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.