#631433
Closest named color: Burgundy (#610023). oklch(33.9% 0.114 1.9), rgb(99, 20, 51).
Aa
White text reads best on this color (12.51:1).
About this color
#631433 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.114 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.031 away. White text reads best on it, at 12.51:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.114) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.67:1 |
| White text | 12.51:1 |
Values
| HEX | #631433 |
| RGB | rgb(99, 20, 51) |
| HSL | hsl(336, 66%, 23%) |
| OKLCH | oklch(33.9% 0.114 1.9) |
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 #631433 | 12.51:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #631433 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #631433 text on white | 12.51:1 | AAA | Lc 97.4 | Preferred for body text |
| #631433 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3E8
oklch(93.5% 0.025 2.1)
-
Step 200
200
#F5CDD7
oklch(88.5% 0.047 1.3)
-
Step 300
300
#F0AABC
oklch(80.9% 0.085 2.3)
-
Step 400
400
#E5799A
oklch(70.6% 0.138 1.8)
-
Step 500
500
#DA5281
oklch(63.1% 0.175 2.1)
-
Step 600
600
#C52F6B
oklch(55.6% 0.19 1.8)
-
Step 700
700
#AA1F59
oklch(49.1% 0.177 1.9)
-
Step 800
800
#8A1E49
oklch(42.8% 0.146 1.9)
-
Step 900
900 (this color)
#631433
oklch(33.9% 0.114 1.9)
-
Step 950
950
#411424
oklch(26.9% 0.072 1.1)
#631433 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) | #262A34 | 0.128 |
| Deuteranopia (no green cones) | #3B3931 | 0.116 |
| Tritanopia (no blue cones) | #6C0521 | 0.033 |
| Achromatopsia (no color) | #343434 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631433
#631433
oklch(33.9% 0.114 1.9)
- #00423A
#00423A
oklch(34% 0.061 181.5)
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 #631433, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.031
- Merlot #730039 ΔE 0.038
- Claret #680018 ΔE 0.041
- Bordeaux #7B002C ΔE 0.053
- Grape Purple #5D1451 ΔE 0.056
- Wine Red #7B0323 ΔE 0.057
- Reddy Brown #6E1005 ΔE 0.063
- Velvet #750851 ΔE 0.065
Use #631433 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.