#631F6C
Closest named color: Grape Purple (#5D1451). oklch(37.9% 0.139 322.8), rgb(99, 31, 108).
Aa
White text reads best on this color (10.80:1).
About this color
#631F6C is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.139 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.050 away. White text reads best on it, at 10.80:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #631F6C |
| RGB | rgb(99, 31, 108) |
| HSL | hsl(293, 55%, 27%) |
| OKLCH | oklch(37.9% 0.139 322.8) |
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 #631F6C | 10.80:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #631F6C | 1.94:1 | Fails | Lc 9.7 | Not readable |
| #631F6C text on white | 10.80:1 | AAA | Lc 94.2 | Preferred for body text |
| #631F6C text on black | 1.94:1 | Fails | Lc -8.3 | 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
#FAF2FB
oklch(97% 0.015 322.3)
-
Step 100
100
#F4E4F6
oklch(93.7% 0.029 322.4)
-
Step 200
200
#ECCDF0
oklch(88.5% 0.058 322.4)
-
Step 300
300
#E1AAE8
oklch(80.9% 0.104 322.7)
-
Step 400
400
#D179DC
oklch(70.7% 0.167 323)
-
Step 500
500
#C350D3
oklch(63.1% 0.214 322.6)
-
Step 600
600
#AF2AC0
oklch(55.7% 0.233 322.8)
-
Step 700
700
#9619A5
oklch(49.1% 0.216 323)
-
Step 800
800
#7A1A86
oklch(42.8% 0.179 322.9)
-
Step 900
900 (this color)
#631F6C
oklch(37.9% 0.139 322.8)
-
Step 950
950
#3A143F
oklch(27.1% 0.088 322.9)
#631F6C 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) | #09386E | 0.143 |
| Deuteranopia (no green cones) | #2A406A | 0.122 |
| Tritanopia (no blue cones) | #652C43 | 0.083 |
| Achromatopsia (no color) | #3D3D3D | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631F6C
#631F6C
oklch(37.9% 0.139 322.8)
- #005202
#005202
oklch(38% 0.128 142.8)
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 #631F6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.050
- Rich Purple #720058 ΔE 0.053
- Velvet #750851 ΔE 0.062
- Purple #800080 ΔE 0.070
- Royal Purple #4B006E ΔE 0.073
- Plum Purple #4E0550 ΔE 0.078
- Indigo #4B0082 ΔE 0.081
- Rebecca Purple #663399 ΔE 0.082
Use #631F6C 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.