#63281C
Closest named color: Chestnut (#742802). oklch(35.9% 0.089 33.1), rgb(99, 40, 28).
Aa
White text reads best on this color (11.34:1).
About this color
#63281C is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.089 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.041 away. White text reads best on it, at 11.34:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.85:1 |
| White text | 11.34:1 |
Values
| HEX | #63281C |
| RGB | rgb(99, 40, 28) |
| HSL | hsl(10, 56%, 25%) |
| OKLCH | oklch(35.9% 0.089 33.1) |
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 #63281C | 11.34:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #63281C | 1.85:1 | Fails | Lc 8.2 | Not readable |
| #63281C text on white | 11.34:1 | AAA | Lc 95.6 | Preferred for body text |
| #63281C text on black | 1.85:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#F0D1CA
oklch(88.5% 0.036 32.8)
-
Step 300
300
#E8B2A5
oklch(80.9% 0.066 33.9)
-
Step 400
400
#DA8775
oklch(70.6% 0.106 33)
-
Step 500
500
#CE6751
oklch(63.1% 0.135 33.4)
-
Step 600
600
#BA4B35
oklch(55.6% 0.148 33)
-
Step 700
700
#A03C28
oklch(49.2% 0.137 33.2)
-
Step 800
800
#823222
oklch(42.8% 0.114 33.1)
-
Step 900
900 (this color)
#63281C
oklch(35.9% 0.089 33.1)
-
Step 950
950
#3D1B14
oklch(26.9% 0.055 32.9)
#63281C 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) | #38321B | 0.089 |
| Deuteranopia (no green cones) | #463F1B | 0.083 |
| Tritanopia (no blue cones) | #6D1C25 | 0.035 |
| Achromatopsia (no color) | #3A3A3A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63281C
#63281C
oklch(35.9% 0.089 33.1)
- #004550
#004550
oklch(35.9% 0.063 212.6)
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 #63281C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.041
- Reddy Brown #6E1005 ΔE 0.042
- Blood #770001 ΔE 0.059
- Purple Brown #673A3F ΔE 0.059
- Claret #680018 ΔE 0.059
- Wine Red #7B0323 ΔE 0.068
- Maroon #800000 ΔE 0.069
- Burgundy #610023 ΔE 0.072
Use #63281C 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.