#631C47
Closest named color: Grape Purple (#5D1451). oklch(35.5% 0.113 347.1), rgb(99, 28, 71).
Aa
White text reads best on this color (11.74:1).
About this color
#631C47 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.113 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.031 away. White text reads best on it, at 11.74:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.113) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.78:1 |
| White text | 11.74:1 |
Values
| HEX | #631C47 |
| RGB | rgb(99, 28, 71) |
| HSL | hsl(324, 56%, 25%) |
| OKLCH | oklch(35.5% 0.113 347.1) |
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 #631C47 | 11.74:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #631C47 | 1.78:1 | Fails | Lc 7.7 | Not readable |
| #631C47 text on white | 11.74:1 | AAA | Lc 96.2 | Preferred for body text |
| #631C47 text on black | 1.78:1 | 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
#FCF3F7
oklch(97.2% 0.011 348.4)
-
Step 100
100
#F7E4ED
oklch(93.7% 0.024 347.2)
-
Step 200
200
#F2CDDF
oklch(88.5% 0.048 347.2)
-
Step 300
300
#EAABCB
oklch(80.9% 0.084 347.3)
-
Step 400
400
#DD7BB1
oklch(70.7% 0.137 347)
-
Step 500
500
#D0569D
oklch(63.1% 0.172 347.2)
-
Step 600
600
#BC3588
oklch(55.7% 0.189 347.2)
-
Step 700
700
#A12673
oklch(49% 0.175 347.2)
-
Step 800
800
#83225E
oklch(42.7% 0.145 347)
-
Step 900
900 (this color)
#631C47
oklch(35.5% 0.113 347.1)
-
Step 950
950
#3E152D
oklch(26.9% 0.072 346.8)
#631C47 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) | #253048 | 0.124 |
| Deuteranopia (no green cones) | #393C45 | 0.110 |
| Tritanopia (no blue cones) | #6A1A2E | 0.046 |
| Achromatopsia (no color) | #383838 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631C47
#631C47
oklch(35.5% 0.113 347.1)
- #004834
#004834
oklch(35.6% 0.073 167)
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 #631C47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.031
- Merlot #730039 ΔE 0.044
- Velvet #750851 ΔE 0.045
- Rich Purple #720058 ΔE 0.052
- Burgundy #610023 ΔE 0.063
- Wine #80013F ΔE 0.064
- Red Purple #820747 ΔE 0.066
- Bordeaux #7B002C ΔE 0.067
Use #631C47 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.