#634790
Closest named color: Twilight (#4E518B). oklch(46.3% 0.117 299.5), rgb(99, 71, 144).
Aa
White text reads best on this color (7.40:1).
About this color
#634790 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.117 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.043 away. White text reads best on it, at 7.40:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #634790 |
| RGB | rgb(99, 71, 144) |
| HSL | hsl(263, 34%, 42%) |
| OKLCH | oklch(46.3% 0.117 299.5) |
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 #634790 | 7.40:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #634790 | 2.83:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #634790 text on white | 7.40:1 | AAA | Lc 85.6 | Fine for body text |
| #634790 text on black | 2.83:1 | Fails | Lc -16.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DCD5EB
oklch(88.5% 0.031 300.3)
-
Step 300
300
#C5B9E1
oklch(80.9% 0.057 298.8)
-
Step 400
400
#A994D1
oklch(70.7% 0.09 299.9)
-
Step 500
500
#9478C5
oklch(63% 0.116 299.8)
-
Step 600
600
#7F60B2
oklch(55.6% 0.127 299.7)
-
Step 700
700 (this color)
#634790
oklch(46.3% 0.117 299.5)
-
Step 800
800
#57417C
oklch(42.7% 0.097 299.5)
-
Step 900
900
#483864
oklch(37.9% 0.075 299.6)
-
Step 950
950
#2A213A
oklch(27% 0.047 299.9)
#634790 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) | #2F5593 | 0.078 |
| Deuteranopia (no green cones) | #36558E | 0.073 |
| Tritanopia (no blue cones) | #5A5565 | 0.091 |
| Achromatopsia (no color) | #555555 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634790
#634790
oklch(46.3% 0.117 299.5)
- #526100
#526100
oklch(46.3% 0.11 119.6)
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 #634790, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.043
- Rebecca Purple #663399 ΔE 0.049
- Blueberry #464196 ΔE 0.055
- Dusk #4E5481 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.057
- Dusky Blue #475F94 ΔE 0.073
- Light Eggplant #894585 ΔE 0.073
- Dusty Grape #545775 ΔE 0.073
Use #634790 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.