#631866
Closest named color: Grape Purple (#5D1451). oklch(36.8% 0.143 326.3), rgb(99, 24, 102).
Aa
White text reads best on this color (11.33:1).
About this color
#631866 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.143 and its hue 326°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.038 away. White text reads best on it, at 11.33:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.85:1 |
| White text | 11.33:1 |
Values
| HEX | #631866 |
| RGB | rgb(99, 24, 102) |
| HSL | hsl(298, 62%, 25%) |
| OKLCH | oklch(36.8% 0.143 326.3) |
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 #631866 | 11.33:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #631866 | 1.85:1 | Fails | Lc 8.8 | Not readable |
| #631866 text on white | 11.33:1 | AAA | Lc 95.2 | Preferred for body text |
| #631866 text on black | 1.85:1 | Fails | Lc -7.5 | 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
#FBF2FB
oklch(97.1% 0.015 325.7)
-
Step 100
100
#F5E3F5
oklch(93.5% 0.031 325.8)
-
Step 200
200
#EFCCEE
oklch(88.5% 0.059 327)
-
Step 300
300
#E5A8E6
oklch(80.8% 0.108 326)
-
Step 400
400
#D676D9
oklch(70.7% 0.172 326.1)
-
Step 500
500
#C94BCE
oklch(63.1% 0.219 326.2)
-
Step 600
600
#B421BB
oklch(55.6% 0.238 326.1)
-
Step 700
700
#9B0CA1
oklch(49.1% 0.222 326.3)
-
Step 800
800
#7E1382
oklch(42.7% 0.183 326.5)
-
Step 900
900 (this color)
#631866
oklch(36.8% 0.143 326.3)
-
Step 950
950
#3C123D
oklch(27% 0.09 326.8)
#631866 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) | #053468 | 0.152 |
| Deuteranopia (no green cones) | #2A3D64 | 0.127 |
| Tritanopia (no blue cones) | #66253D | 0.082 |
| Achromatopsia (no color) | #3A3A3A | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631866
#631866
oklch(36.8% 0.143 326.3)
- #004E15
#004E15
oklch(36.9% 0.112 146.2)
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 #631866, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.038
- Rich Purple #720058 ΔE 0.043
- Velvet #750851 ΔE 0.054
- Plum Purple #4E0550 ΔE 0.066
- Royal Purple #4B006E ΔE 0.069
- Purple #800080 ΔE 0.073
- Deep Violet #490648 ΔE 0.082
- Indigo #4B0082 ΔE 0.083
Use #631866 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.