#631C61
Closest named color: Grape Purple (#5D1451). oklch(36.9% 0.133 329), rgb(99, 28, 97).
Aa
White text reads best on this color (11.23:1).
About this color
#631C61 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.133 and its hue 329°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.032 away. White text reads best on it, at 11.23:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.86:1 |
| White text | 11.23:1 |
Values
| HEX | #631C61 |
| RGB | rgb(99, 28, 97) |
| HSL | hsl(302, 56%, 25%) |
| OKLCH | oklch(36.9% 0.133 329) |
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 #631C61 | 11.23:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #631C61 | 1.86:1 | Fails | Lc 8.8 | Not readable |
| #631C61 text on white | 11.23:1 | AAA | Lc 95.1 | Preferred for body text |
| #631C61 text on black | 1.86:1 | 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
#FBF2FA
oklch(97% 0.014 329.1)
-
Step 100
100
#F5E3F4
oklch(93.5% 0.03 327.5)
-
Step 200
200
#EFCDEB
oklch(88.6% 0.055 329.9)
-
Step 300
300
#E5A9E0
oklch(80.8% 0.1 329.3)
-
Step 400
400
#D678D1
oklch(70.6% 0.161 329.1)
-
Step 500
500
#C950C5
oklch(63.2% 0.205 329)
-
Step 600
600
#B42BB1
oklch(55.6% 0.222 329)
-
Step 700
700
#9B1A98
oklch(49.1% 0.207 329.3)
-
Step 800
800
#7E1B7B
oklch(42.8% 0.171 329.4)
-
Step 900
900 (this color)
#631C61
oklch(36.9% 0.133 329)
-
Step 950
950
#3C143A
oklch(27.1% 0.084 329.6)
#631C61 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) | #133563 | 0.141 |
| Deuteranopia (no green cones) | #2F3E5F | 0.120 |
| Tritanopia (no blue cones) | #67253C | 0.073 |
| Achromatopsia (no color) | #3B3B3B | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631C61
#631C61
oklch(36.9% 0.133 329)
- #004E1D
#004E1D
oklch(37% 0.105 148.8)
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 #631C61, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.032
- Rich Purple #720058 ΔE 0.041
- Velvet #750851 ΔE 0.049
- Plum Purple #4E0550 ΔE 0.067
- Royal Purple #4B006E ΔE 0.076
- Merlot #730039 ΔE 0.077
- Purple #800080 ΔE 0.079
- Red Purple #820747 ΔE 0.081
Use #631C61 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.