#63181C
Closest named color: Claret (#680018). oklch(33.7% 0.107 22.3), rgb(99, 24, 28).
Aa
White text reads best on this color (12.51:1).
About this color
#63181C is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.107 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.027 away. White text reads best on it, at 12.51:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.107) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.67:1 |
| White text | 12.51:1 |
Values
| HEX | #63181C |
| RGB | rgb(99, 24, 28) |
| HSL | hsl(357, 61%, 24%) |
| OKLCH | oklch(33.7% 0.107 22.3) |
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 #63181C | 12.51:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #63181C | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #63181C text on white | 12.51:1 | AAA | Lc 97.4 | Preferred for body text |
| #63181C text on black | 1.67:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F6CECC
oklch(88.5% 0.045 21.4)
-
Step 300
300
#F0ADA9
oklch(81% 0.079 22.8)
-
Step 400
400
#E67E7C
oklch(70.8% 0.129 22)
-
Step 500
500
#DB585A
oklch(63.1% 0.165 22.2)
-
Step 600
600
#C63840
oklch(55.6% 0.178 22.3)
-
Step 700
700
#AB2932
oklch(49.2% 0.166 22.4)
-
Step 800
800
#8B242A
oklch(42.7% 0.138 22.2)
-
Step 900
900 (this color)
#63181C
oklch(33.7% 0.107 22.3)
-
Step 950
950
#421617
oklch(27% 0.069 21.5)
#63181C 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) | #2D291C | 0.116 |
| Deuteranopia (no green cones) | #403A1A | 0.107 |
| Tritanopia (no blue cones) | #6D011A | 0.029 |
| Achromatopsia (no color) | #343434 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63181C
#63181C
oklch(33.7% 0.107 22.3)
- #004044
#004044
oklch(33.8% 0.058 201.8)
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 #63181C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.027
- Reddy Brown #6E1005 ΔE 0.030
- Burgundy #610023 ΔE 0.038
- Blood #770001 ΔE 0.047
- Wine Red #7B0323 ΔE 0.054
- Bordeaux #7B002C ΔE 0.060
- Chestnut #742802 ΔE 0.063
- Maroon #800000 ΔE 0.064
Use #63181C 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.