#631B4A
Closest named color: Grape Purple (#5D1451). oklch(35.5% 0.117 344.6), rgb(99, 27, 74).
Aa
White text reads best on this color (11.75:1).
About this color
#631B4A is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.117 and its hue 345°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.026 away. White text reads best on it, at 11.75:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.117) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.78:1 |
| White text | 11.75:1 |
Values
| HEX | #631B4A |
| RGB | rgb(99, 27, 74) |
| HSL | hsl(321, 57%, 25%) |
| OKLCH | oklch(35.5% 0.117 344.6) |
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 #631B4A | 11.75:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #631B4A | 1.78:1 | Fails | Lc 7.7 | Not readable |
| #631B4A text on white | 11.75:1 | AAA | Lc 96.2 | Preferred for body text |
| #631B4A 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
#FCF2F7
oklch(97% 0.013 345.5)
-
Step 100
100
#F7E3EE
oklch(93.5% 0.026 343.3)
-
Step 200
200
#F2CDE1
oklch(88.5% 0.049 344.4)
-
Step 300
300
#EAAACE
oklch(80.9% 0.088 344.5)
-
Step 400
400
#DD7AB5
oklch(70.7% 0.141 344.7)
-
Step 500
500
#D054A3
oklch(63.1% 0.179 344.3)
-
Step 600
600
#BB338E
oklch(55.6% 0.194 344.3)
-
Step 700
700
#A12378
oklch(49% 0.181 344.6)
-
Step 800
800
#832062
oklch(42.7% 0.15 344.5)
-
Step 900
900 (this color)
#631B4A
oklch(35.5% 0.117 344.6)
-
Step 950
950
#3E152F
oklch(27% 0.073 344.2)
#631B4A 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) | #23304B | 0.128 |
| Deuteranopia (no green cones) | #383C48 | 0.113 |
| Tritanopia (no blue cones) | #6A1A2F | 0.050 |
| Achromatopsia (no color) | #383838 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631B4A
#631B4A
oklch(35.5% 0.117 344.6)
- #004832
#004832
oklch(35.6% 0.075 165)
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 #631B4A, closest first.
No curated palette has a color within ΔE 0.04 of #631B4A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.026
- Velvet #750851 ΔE 0.042
- Merlot #730039 ΔE 0.047
- Rich Purple #720058 ΔE 0.047
- Wine #80013F ΔE 0.065
- Red Purple #820747 ΔE 0.066
- Burgundy #610023 ΔE 0.067
- Plum Purple #4E0550 ΔE 0.067
Use #631B4A 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.