#A3663C
Closest named color: Earth (#A2653E). oklch(56.8% 0.097 54), rgb(163, 102, 60).
Aa
White text reads best on this color (4.64:1).
About this color
#A3663C is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.097 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.004 away. White text reads best on it, at 4.64:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.097) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.52:1 |
| White text | 4.64:1 |
Values
| HEX | #A3663C |
| RGB | rgb(163, 102, 60) |
| HSL | hsl(24, 46%, 44%) |
| OKLCH | oklch(56.8% 0.097 54) |
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 #A3663C | 4.64:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #A3663C | 4.52:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #A3663C text on white | 4.64:1 | AA | Lc 72.0 | Content text, not long reading |
| #A3663C text on black | 4.52:1 | AA | Lc -29.7 | 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
#F1E8E2
oklch(93.6% 0.013 56.2)
-
Step 200
200
#E7D5CA
oklch(88.5% 0.025 53.7)
-
Step 300
300
#D8BAA7
oklch(81% 0.043 54.3)
-
Step 400
400
#C49577
oklch(70.7% 0.071 53.8)
-
Step 500
500
#B47A54
oklch(63.1% 0.09 53.6)
-
Step 600
600 (this color)
#A3663C
oklch(56.8% 0.097 54)
-
Step 700
700
#88512B
oklch(49.1% 0.09 53.5)
-
Step 800
800
#6F4324
oklch(42.8% 0.076 54.3)
-
Step 900
900
#5A3922
oklch(37.8% 0.059 54.8)
-
Step 950
950
#352115
oklch(27% 0.037 51.5)
#A3663C 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) | #786C38 | 0.076 |
| Deuteranopia (no green cones) | #867A3C | 0.070 |
| Tritanopia (no blue cones) | #B15A5C | 0.064 |
| Achromatopsia (no color) | #747474 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3663C
#A3663C
oklch(56.8% 0.097 54)
- #3080A7
#3080A7
oklch(56.9% 0.097 233.5)
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 #A3663C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.004
- Sepia #985E2B ΔE 0.033
- Raw Umber #A75E09 ΔE 0.035
- Copper #B66325 ΔE 0.037
- Orangey Brown #B16002 ΔE 0.039
- Mocha #9D7651 ΔE 0.041
- Clay Brown #B2713D ΔE 0.041
- Umber #B26400 ΔE 0.042
Use #A3663C 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.