#631B22
Closest named color: Claret (#680018). oklch(34.1% 0.103 19.1), rgb(99, 27, 34).
Aa
White text reads best on this color (12.27:1).
About this color
#631B22 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.103 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.031 away. White text reads best on it, at 12.27:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.103) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.71:1 |
| White text | 12.27:1 |
Values
| HEX | #631B22 |
| RGB | rgb(99, 27, 34) |
| HSL | hsl(354, 57%, 25%) |
| OKLCH | oklch(34.1% 0.103 19.1) |
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 #631B22 | 12.27:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #631B22 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #631B22 text on white | 12.27:1 | AAA | Lc 97.1 | Preferred for body text |
| #631B22 text on black | 1.71:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECE
oklch(88.5% 0.044 18)
-
Step 300
300
#EFADAD
oklch(81% 0.078 18.9)
-
Step 400
400
#E37F82
oklch(70.7% 0.124 18.8)
-
Step 500
500
#D85A62
oklch(63% 0.159 19)
-
Step 600
600
#C33B49
oklch(55.5% 0.172 19.1)
-
Step 700
700
#A82C3B
oklch(49.1% 0.159 18.9)
-
Step 800
800
#892631
oklch(42.7% 0.133 18.7)
-
Step 900
900 (this color)
#631B22
oklch(34.1% 0.103 19.1)
-
Step 950
950
#411719
oklch(27% 0.066 19.7)
#631B22 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) | #2E2B22 | 0.112 |
| Deuteranopia (no green cones) | #403B20 | 0.105 |
| Tritanopia (no blue cones) | #6D091E | 0.027 |
| Achromatopsia (no color) | #353535 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631B22
#631B22
oklch(34.1% 0.103 19.1)
- #004144
#004144
oklch(34.1% 0.058 200)
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 #631B22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.031
- Reddy Brown #6E1005 ΔE 0.036
- Burgundy #610023 ΔE 0.040
- Blood #770001 ΔE 0.051
- Wine Red #7B0323 ΔE 0.053
- Bordeaux #7B002C ΔE 0.058
- Merlot #730039 ΔE 0.061
- Chestnut #742802 ΔE 0.063
Use #631B22 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.