#631531
Closest named color: Burgundy (#610023). oklch(33.9% 0.112 3.9), rgb(99, 21, 49).
Aa
White text reads best on this color (12.48:1).
About this color
#631531 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.112 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.030 away. White text reads best on it, at 12.48:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.112) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.68:1 |
| White text | 12.48:1 |
Values
| HEX | #631531 |
| RGB | rgb(99, 21, 49) |
| HSL | hsl(338, 65%, 24%) |
| OKLCH | oklch(33.9% 0.112 3.9) |
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 #631531 | 12.48:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #631531 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #631531 text on white | 12.48:1 | AAA | Lc 97.3 | Preferred for body text |
| #631531 text on black | 1.68:1 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#F9E4E8
oklch(93.7% 0.024 4.5)
-
Step 200
200
#F5CDD5
oklch(88.5% 0.046 4.6)
-
Step 300
300
#F0AABA
oklch(80.9% 0.084 4.1)
-
Step 400
400
#E57A97
oklch(70.7% 0.135 3.9)
-
Step 500
500
#DA537E
oklch(63.1% 0.173 3.7)
-
Step 600
600
#C53167
oklch(55.6% 0.187 3.8)
-
Step 700
700
#AA2155
oklch(49.1% 0.174 4.2)
-
Step 800
800
#8A1F46
oklch(42.7% 0.144 3.9)
-
Step 900
900 (this color)
#631531
oklch(33.9% 0.112 3.9)
-
Step 950
950
#411522
oklch(27% 0.07 4.6)
#631531 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) | #272A32 | 0.126 |
| Deuteranopia (no green cones) | #3C392F | 0.113 |
| Tritanopia (no blue cones) | #6C0621 | 0.031 |
| Achromatopsia (no color) | #343434 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631531
#631531
oklch(33.9% 0.112 3.9)
- #00423B
#00423B
oklch(34% 0.061 183.1)
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 #631531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.030
- Claret #680018 ΔE 0.038
- Merlot #730039 ΔE 0.040
- Bordeaux #7B002C ΔE 0.052
- Wine Red #7B0323 ΔE 0.055
- Reddy Brown #6E1005 ΔE 0.059
- Grape Purple #5D1451 ΔE 0.060
- Wine #80013F ΔE 0.066
Use #631531 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.