#A66140
Closest named color: Earth (#A2653E). oklch(56.4% 0.101 45.6), rgb(166, 97, 64).
Aa
White text reads best on this color (4.76:1).
About this color
#A66140 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.101 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.013 away. White text reads best on it, at 4.76:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.101) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #A66140 |
| RGB | rgb(166, 97, 64) |
| HSL | hsl(19, 44%, 45%) |
| OKLCH | oklch(56.4% 0.101 45.6) |
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 #A66140 | 4.76:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #A66140 | 4.40:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #A66140 text on white | 4.76:1 | AA | Lc 72.8 | Content text, not long reading |
| #A66140 text on black | 4.40:1 | AA large text | Lc -28.9 | Dividers and decoration only |
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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F2E7E3
oklch(93.6% 0.013 41.2)
-
Step 200
200
#E8D4CC
oklch(88.4% 0.025 43.2)
-
Step 300
300
#DBB8A9
oklch(80.9% 0.046 44.5)
-
Step 400
400
#C8937A
oklch(70.8% 0.074 46.3)
-
Step 500
500
#B87758
oklch(63% 0.093 46.1)
-
Step 600
600 (this color)
#A66140
oklch(56.4% 0.101 45.6)
-
Step 700
700
#8C4E30
oklch(49.1% 0.094 45.6)
-
Step 800
800
#724028
oklch(42.7% 0.079 45.6)
-
Step 900
900
#5C3725
oklch(37.7% 0.06 46.3)
-
Step 950
950
#362016
oklch(26.9% 0.039 45.1)
#A66140 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) | #746A3D | 0.089 |
| Deuteranopia (no green cones) | #84793F | 0.084 |
| Tritanopia (no blue cones) | #B55459 | 0.058 |
| Achromatopsia (no color) | #737373 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66140
#A66140
oklch(56.4% 0.101 45.6)
- #1881A3
#1881A3
oklch(56.3% 0.102 226.1)
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 #A66140, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.013
- Sepia #985E2B ΔE 0.036
- Copper #B66325 ΔE 0.039
- Raw Umber #A75E09 ΔE 0.040
- Sienna #A0522D ΔE 0.040
- Clay #B66A50 ΔE 0.041
- Orangey Brown #B16002 ΔE 0.044
- Cinnamon #AC4F06 ΔE 0.048
Use #A66140 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.