#631E57
Closest named color: Grape Purple (#5D1451). oklch(36.6% 0.122 335.4), rgb(99, 30, 87).
Aa
White text reads best on this color (11.32:1).
About this color
#631E57 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.122 and its hue 335°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.025 away. White text reads best on it, at 11.32:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.85:1 |
| White text | 11.32:1 |
Values
| HEX | #631E57 |
| RGB | rgb(99, 30, 87) |
| HSL | hsl(310, 53%, 25%) |
| OKLCH | oklch(36.6% 0.122 335.4) |
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 #631E57 | 11.32:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #631E57 | 1.85:1 | Fails | Lc 8.5 | Not readable |
| #631E57 text on white | 11.32:1 | AAA | Lc 95.4 | Preferred for body text |
| #631E57 text on black | 1.85:1 | 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
#F6E4F1
oklch(93.7% 0.026 335.5)
-
Step 200
200
#F0CDE6
oklch(88.5% 0.051 336.3)
-
Step 300
300
#E6AAD8
oklch(80.8% 0.092 335)
-
Step 400
400
#D87BC4
oklch(70.8% 0.146 335.5)
-
Step 500
500
#CB54B5
oklch(63.1% 0.188 335.4)
-
Step 600
600
#B633A0
oklch(55.6% 0.203 335.6)
-
Step 700
700
#9C2389
oklch(49% 0.189 335.4)
-
Step 800
800
#7F206F
oklch(42.7% 0.157 335.7)
-
Step 900
900 (this color)
#631E57
oklch(36.6% 0.122 335.4)
-
Step 950
950
#3C1535
oklch(27% 0.077 335)
#631E57 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) | #1E3459 | 0.131 |
| Deuteranopia (no green cones) | #353E55 | 0.113 |
| Tritanopia (no blue cones) | #682237 | 0.061 |
| Achromatopsia (no color) | #3A3A3A | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631E57
#631E57
oklch(36.6% 0.122 335.4)
- #004C29
#004C29
oklch(36.6% 0.09 155.4)
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 #631E57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.025
- Rich Purple #720058 ΔE 0.041
- Velvet #750851 ΔE 0.043
- Merlot #730039 ΔE 0.063
- Plum Purple #4E0550 ΔE 0.067
- Red Purple #820747 ΔE 0.072
- Wine #80013F ΔE 0.074
- Deep Violet #490648 ΔE 0.078
Use #631E57 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.