#631E73
Closest named color: Grape Purple (#5D1451). oklch(38.3% 0.147 319.4), rgb(99, 30, 115).
Aa
White text reads best on this color (10.69:1).
About this color
#631E73 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.147 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.060 away. White text reads best on it, at 10.69:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.96:1 |
| White text | 10.69:1 |
Values
| HEX | #631E73 |
| RGB | rgb(99, 30, 115) |
| HSL | hsl(289, 59%, 28%) |
| OKLCH | oklch(38.3% 0.147 319.4) |
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 #631E73 | 10.69:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #631E73 | 1.96:1 | Fails | Lc 10.0 | Not readable |
| #631E73 text on white | 10.69:1 | AAA | Lc 93.9 | Preferred for body text |
| #631E73 text on black | 1.96:1 | Fails | Lc -8.6 | 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
#EBCDF3
oklch(88.5% 0.061 319.1)
-
Step 300
300
#E0A9EE
oklch(80.8% 0.112 319.3)
-
Step 400
400
#CF78E5
oklch(70.8% 0.176 319.3)
-
Step 500
500
#C14DDD
oklch(63.1% 0.226 319.3)
-
Step 600
600
#AD23CA
oklch(55.6% 0.245 319.6)
-
Step 700
700
#940FAF
oklch(49.1% 0.228 319.3)
-
Step 800
800
#78158E
oklch(42.7% 0.189 319.1)
-
Step 900
900 (this color)
#631E73
oklch(38.3% 0.147 319.4)
-
Step 950
950
#391342
oklch(27% 0.092 319.5)
#631E73 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) | #003975 | 0.146 |
| Deuteranopia (no green cones) | #244071 | 0.127 |
| Tritanopia (no blue cones) | #632E46 | 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°).
- #631E73
#631E73
oklch(38.3% 0.147 319.4)
- #175100
#175100
oklch(38.2% 0.121 139.4)
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 #631E73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.060
- Rich Purple #720058 ΔE 0.061
- Purple #800080 ΔE 0.065
- Royal Purple #4B006E ΔE 0.070
- Velvet #750851 ΔE 0.072
- Rebecca Purple #663399 ΔE 0.073
- Indigo #4B0082 ΔE 0.074
- Plum Purple #4E0550 ΔE 0.084
Use #631E73 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.