#631C5A
Closest named color: Grape Purple (#5D1451). oklch(36.5% 0.127 333.4), rgb(99, 28, 90).
Aa
White text reads best on this color (11.38:1).
About this color
#631C5A is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.127 and its hue 333°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.024 away. White text reads best on it, at 11.38:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.84:1 |
| White text | 11.38:1 |
Values
| HEX | #631C5A |
| RGB | rgb(99, 28, 90) |
| HSL | hsl(308, 56%, 25%) |
| OKLCH | oklch(36.5% 0.127 333.4) |
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 #631C5A | 11.38:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #631C5A | 1.84:1 | Fails | Lc 8.5 | Not readable |
| #631C5A text on white | 11.38:1 | AAA | Lc 95.4 | Preferred for body text |
| #631C5A text on black | 1.84:1 | 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
#FBF2F9
oklch(97% 0.013 333)
-
Step 100
100
#F6E3F2
oklch(93.5% 0.029 332.8)
-
Step 200
200
#F0CDE8
oklch(88.6% 0.053 334)
-
Step 300
300
#E7AADB
oklch(81% 0.096 333.5)
-
Step 400
400
#D879C9
oklch(70.7% 0.154 333.2)
-
Step 500
500
#CB51BA
oklch(63% 0.196 333.5)
-
Step 600
600
#B62EA6
oklch(55.5% 0.213 333.4)
-
Step 700
700
#9C1E8E
oklch(49% 0.197 333.4)
-
Step 800
800
#7F1D74
oklch(42.7% 0.164 333.1)
-
Step 900
900 (this color)
#631C5A
oklch(36.5% 0.127 333.4)
-
Step 950
950
#3C1437
oklch(26.9% 0.081 332.7)
#631C5A 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) | #1A335C | 0.136 |
| Deuteranopia (no green cones) | #333E58 | 0.117 |
| Tritanopia (no blue cones) | #682238 | 0.066 |
| Achromatopsia (no color) | #3A3A3A | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631C5A
#631C5A
oklch(36.5% 0.127 333.4)
- #004C26
#004C26
oklch(36.5% 0.093 153.6)
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 #631C5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.024
- Rich Purple #720058 ΔE 0.039
- Velvet #750851 ΔE 0.043
- Plum Purple #4E0550 ΔE 0.064
- Merlot #730039 ΔE 0.067
- Red Purple #820747 ΔE 0.074
- Deep Violet #490648 ΔE 0.077
- Wine #80013F ΔE 0.078
Use #631C5A 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.