#631033
Closest named color: Burgundy (#610023). oklch(33.5% 0.118 1), rgb(99, 16, 51).
Aa
White text reads best on this color (12.70:1).
About this color
#631033 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.118 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.028 away. White text reads best on it, at 12.70:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.65:1 |
| White text | 12.70:1 |
Values
| HEX | #631033 |
| RGB | rgb(99, 16, 51) |
| HSL | hsl(335, 72%, 23%) |
| OKLCH | oklch(33.5% 0.118 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 #631033 | 12.70:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #631033 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #631033 text on white | 12.70:1 | AAA | Lc 97.6 | Preferred for body text |
| #631033 text on black | 1.65:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FAE3E9
oklch(93.6% 0.026 359.9)
-
Step 200
200
#F6CCD7
oklch(88.4% 0.049 0.6)
-
Step 300
300
#F1A9BD
oklch(80.9% 0.088 1.1)
-
Step 400
400
#E7789B
oklch(70.8% 0.142 1.3)
-
Step 500
500
#DC4F83
oklch(63.1% 0.181 1)
-
Step 600
600
#C72A6C
oklch(55.6% 0.197 1.2)
-
Step 700
700
#AC195A
oklch(49.1% 0.184 1.3)
-
Step 800
800
#8B1A4A
oklch(42.6% 0.151 0.9)
-
Step 900
900 (this color)
#631033
oklch(33.5% 0.118 1)
-
Step 950
950
#421324
oklch(26.9% 0.075 1.1)
#631033 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) | #242834 | 0.133 |
| Deuteranopia (no green cones) | #3A3831 | 0.120 |
| Tritanopia (no blue cones) | #6C0020 | 0.035 |
| Achromatopsia (no color) | #333333 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631033
#631033
oklch(33.5% 0.118 1)
- #004138
#004138
oklch(33.6% 0.061 179.8)
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 #631033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.028
- Merlot #730039 ΔE 0.037
- Claret #680018 ΔE 0.041
- Bordeaux #7B002C ΔE 0.053
- Grape Purple #5D1451 ΔE 0.055
- Wine Red #7B0323 ΔE 0.058
- Velvet #750851 ΔE 0.064
- Wine #80013F ΔE 0.065
Use #631033 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.