#631F56
Closest named color: Grape Purple (#5D1451). oklch(36.6% 0.12 336.1), rgb(99, 31, 86).
Aa
White text reads best on this color (11.28:1).
About this color
#631F56 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.120 and its hue 336°. 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 11.28:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.86:1 |
| White text | 11.28:1 |
Values
| HEX | #631F56 |
| RGB | rgb(99, 31, 86) |
| HSL | hsl(311, 52%, 25%) |
| OKLCH | oklch(36.6% 0.12 336.1) |
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 #631F56 | 11.28:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #631F56 | 1.86:1 | Fails | Lc 8.6 | Not readable |
| #631F56 text on white | 11.28:1 | AAA | Lc 95.3 | Preferred for body text |
| #631F56 text on black | 1.86:1 | Fails | Lc -7.3 | 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
#FBF3F8
oklch(97.2% 0.011 339.3)
-
Step 100
100
#F6E4F0
oklch(93.7% 0.025 337.8)
-
Step 200
200
#EFCDE6
oklch(88.4% 0.05 335.4)
-
Step 300
300
#E6ABD7
oklch(80.9% 0.089 335.8)
-
Step 400
400
#D77BC2
oklch(70.6% 0.144 336)
-
Step 500
500
#CA55B3
oklch(63% 0.184 335.9)
-
Step 600
600
#B5349E
oklch(55.5% 0.2 336.1)
-
Step 700
700
#9C2587
oklch(49.1% 0.186 336.3)
-
Step 800
800
#7F226E
oklch(42.8% 0.153 336.3)
-
Step 900
900 (this color)
#631F56
oklch(36.6% 0.12 336.1)
-
Step 950
950
#3C1534
oklch(26.9% 0.076 336.1)
#631F56 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) | #203458 | 0.128 |
| Deuteranopia (no green cones) | #363E54 | 0.111 |
| Tritanopia (no blue cones) | #682337 | 0.059 |
| Achromatopsia (no color) | #3B3B3B | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631F56
#631F56
oklch(36.6% 0.12 336.1)
- #004C2A
#004C2A
oklch(36.6% 0.089 156)
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 #631F56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.026
- Rich Purple #720058 ΔE 0.043
- Velvet #750851 ΔE 0.043
- Merlot #730039 ΔE 0.062
- Plum Purple #4E0550 ΔE 0.068
- Red Purple #820747 ΔE 0.071
- Wine #80013F ΔE 0.073
- Deep Violet #490648 ΔE 0.079
Use #631F56 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.