#631970
Closest named color: Grape Purple (#5D1451). oklch(37.6% 0.151 321.2), rgb(99, 25, 112).
Aa
White text reads best on this color (11.03:1).
About this color
#631970 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.151 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.054 away. White text reads best on it, at 11.03:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #631970 |
| RGB | rgb(99, 25, 112) |
| HSL | hsl(291, 64%, 27%) |
| OKLCH | oklch(37.6% 0.151 321.2) |
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 #631970 | 11.03:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #631970 | 1.90:1 | Fails | Lc 9.4 | Not readable |
| #631970 text on white | 11.03:1 | AAA | Lc 94.5 | Preferred for body text |
| #631970 text on black | 1.90:1 | Fails | Lc -8.1 | 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
#F4E3F7
oklch(93.5% 0.032 321.1)
-
Step 200
200
#EDCCF3
oklch(88.5% 0.063 321.1)
-
Step 300
300
#E2A8ED
oklch(80.8% 0.113 321)
-
Step 400
400
#D275E4
oklch(70.6% 0.182 320.9)
-
Step 500
500
#C549DB
oklch(63.1% 0.231 321.3)
-
Step 600
600
#B01AC9
oklch(55.5% 0.252 321)
-
Step 700
700
#9701AE
oklch(49.1% 0.234 320.9)
-
Step 800
800
#7B0E8D
oklch(42.7% 0.194 321)
-
Step 900
900 (this color)
#631970
oklch(37.6% 0.151 321.2)
-
Step 950
950
#3A1142
oklch(26.9% 0.096 320.7)
#631970 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) | #003772 | 0.151 |
| Deuteranopia (no green cones) | #243F6E | 0.132 |
| Tritanopia (no blue cones) | #642A43 | 0.092 |
| Achromatopsia (no color) | #3C3C3C | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631970
#631970
oklch(37.6% 0.151 321.2)
- #0C5000
#0C5000
oklch(37.6% 0.124 141.1)
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 #631970, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.054
- Rich Purple #720058 ΔE 0.055
- Purple #800080 ΔE 0.066
- Royal Purple #4B006E ΔE 0.066
- Velvet #750851 ΔE 0.068
- Indigo #4B0082 ΔE 0.073
- Plum Purple #4E0550 ΔE 0.077
- Rebecca Purple #663399 ΔE 0.081
Use #631970 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.