#631833
Closest named color: Burgundy (#610023). oklch(34.3% 0.109 3.1), rgb(99, 24, 51).
Aa
White text reads best on this color (12.28:1).
About this color
#631833 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.109 and its hue 3°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.035 away. White text reads best on it, at 12.28:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.70:1 |
| White text | 12.28:1 |
Values
| HEX | #631833 |
| RGB | rgb(99, 24, 51) |
| HSL | hsl(338, 61%, 24%) |
| OKLCH | oklch(34.3% 0.109 3.1) |
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 #631833 | 12.28:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #631833 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #631833 text on white | 12.28:1 | AAA | Lc 97.1 | Preferred for body text |
| #631833 text on black | 1.70:1 | 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
#FCF3F5
oklch(97.2% 0.01 2)
-
Step 100
100
#F9E4E8
oklch(93.7% 0.024 4.5)
-
Step 200
200
#F4CDD6
oklch(88.4% 0.045 2.5)
-
Step 300
300
#EEABBB
oklch(80.9% 0.081 3.3)
-
Step 400
400
#E37B98
oklch(70.6% 0.132 3.2)
-
Step 500
500
#D8557F
oklch(63.1% 0.168 3.3)
-
Step 600
600
#C33569
oklch(55.7% 0.182 3.1)
-
Step 700
700
#A82557
oklch(49.1% 0.17 3.2)
-
Step 800
800
#882247
oklch(42.7% 0.139 3.4)
-
Step 900
900 (this color)
#631833
oklch(34.3% 0.109 3.1)
-
Step 950
950
#411523
oklch(27% 0.07 3.2)
#631833 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) | #292C34 | 0.122 |
| Deuteranopia (no green cones) | #3D3A31 | 0.110 |
| Tritanopia (no blue cones) | #6C0C23 | 0.031 |
| Achromatopsia (no color) | #353535 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631833
#631833
oklch(34.3% 0.109 3.1)
- #00433C
#00433C
oklch(34.4% 0.061 183.3)
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 #631833, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.035
- Merlot #730039 ΔE 0.041
- Claret #680018 ΔE 0.042
- Bordeaux #7B002C ΔE 0.052
- Wine Red #7B0323 ΔE 0.056
- Grape Purple #5D1451 ΔE 0.059
- Reddy Brown #6E1005 ΔE 0.061
- Wine #80013F ΔE 0.066
Use #631833 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.