#631D72
Closest named color: Grape Purple (#5D1451). oklch(38.1% 0.148 319.9), rgb(99, 29, 114).
Aa
White text reads best on this color (10.77:1).
About this color
#631D72 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.148 and its hue 320°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.058 away. White text reads best on it, at 10.77:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #631D72 |
| RGB | rgb(99, 29, 114) |
| HSL | hsl(289, 59%, 28%) |
| OKLCH | oklch(38.1% 0.148 319.9) |
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 #631D72 | 10.77:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #631D72 | 1.94:1 | Fails | Lc 9.8 | Not readable |
| #631D72 text on white | 10.77:1 | AAA | Lc 94.1 | Preferred for body text |
| #631D72 text on black | 1.94:1 | Fails | Lc -8.5 | 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
#FAF2FC
oklch(97% 0.016 319.4)
-
Step 100
100
#F4E3F8
oklch(93.6% 0.033 319.8)
-
Step 200
200
#ECCDF3
oklch(88.6% 0.061 320)
-
Step 300
300
#E1A9ED
oklch(80.9% 0.111 320.3)
-
Step 400
400
#D077E4
oklch(70.7% 0.177 320.1)
-
Step 500
500
#C24CDC
oklch(63.1% 0.226 319.9)
-
Step 600
600
#AE21C9
oklch(55.6% 0.246 320.2)
-
Step 700
700
#950DAE
oklch(49.1% 0.229 320)
-
Step 800
800
#79148D
oklch(42.7% 0.189 320)
-
Step 900
900 (this color)
#631D72
oklch(38.1% 0.148 319.9)
-
Step 950
950
#391242
oklch(26.9% 0.094 319.6)
#631D72 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) | #003974 | 0.147 |
| Deuteranopia (no green cones) | #244070 | 0.128 |
| Tritanopia (no blue cones) | #632D45 | 0.091 |
| Achromatopsia (no color) | #3E3E3E | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631D72
#631D72
oklch(38.1% 0.148 319.9)
- #145100
#145100
oklch(38.1% 0.123 140)
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 #631D72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.058
- Rich Purple #720058 ΔE 0.059
- Purple #800080 ΔE 0.065
- Royal Purple #4B006E ΔE 0.069
- Velvet #750851 ΔE 0.070
- Indigo #4B0082 ΔE 0.074
- Rebecca Purple #663399 ΔE 0.075
- Plum Purple #4E0550 ΔE 0.082
Use #631D72 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.