#A37A66
Closest named color: Reddish Grey (#997570). oklch(61.5% 0.059 47.2), rgb(163, 122, 102).
Aa
Black text reads best on this color (5.53:1).
About this color
#A37A66 is a medium-dark, muted brown. In OKLCH its lightness is 61%, its chroma 0.059 and its hue 47°. Its hue sits on the warm side of the wheel. The nearest named color is Reddish Grey (#997570), ΔE 0.029 away. Black text reads best on it, at 5.53:1.
| Hue family | Browns |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Reddish Grey (#997570) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #A37A66 |
| RGB | rgb(163, 122, 102) |
| HSL | hsl(20, 25%, 52%) |
| OKLCH | oklch(61.5% 0.059 47.2) |
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 #A37A66 | 3.79:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #A37A66 | 5.53:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #A37A66 text on white | 3.79:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #A37A66 text on black | 5.53:1 | AA | Lc -36.2 | 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
#F8F5F3
oklch(97.2% 0.004 56.4)
-
Step 100
100
#EFE8E5
oklch(93.6% 0.009 44.9)
-
Step 200
200
#E3D6D0
oklch(88.5% 0.017 46.6)
-
Step 300
300
#D1BBB1
oklch(80.8% 0.029 46)
-
Step 400
400
#BA9888
oklch(70.6% 0.047 46.6)
-
Step 500
500 (this color)
#A37A66
oklch(61.5% 0.059 47.2)
-
Step 600
600
#936852
oklch(55.6% 0.065 48.1)
-
Step 700
700
#7D5643
oklch(49% 0.06 46.9)
-
Step 800
800
#664737
oklch(42.8% 0.05 48.3)
-
Step 900
900
#533B30
oklch(37.6% 0.039 45.7)
-
Step 950
950
#31231C
oklch(27.1% 0.025 47.8)
#A37A66 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) | #857E65 | 0.049 |
| Deuteranopia (no green cones) | #8E8666 | 0.045 |
| Tritanopia (no blue cones) | #AE7375 | 0.038 |
| Achromatopsia (no color) | #838383 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A37A66
#A37A66
oklch(61.5% 0.059 47.2)
- #5D8CA0
#5D8CA0
oklch(61.4% 0.059 226.6)
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 #A37A66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddish Grey #997570 ΔE 0.029
- Pinkish Brown #B17261 ΔE 0.029
- Mocha #9D7651 ΔE 0.030
- Puce #A57E52 ΔE 0.032
- Tan Brown #AB7E4C ΔE 0.040
- Brown Grey #8D8468 ΔE 0.042
- Light Brown #AD8150 ΔE 0.042
- Coffee #A6814C ΔE 0.044
Use #A37A66 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.