#634591
Closest named color: Rebecca Purple (#663399). oklch(46% 0.122 299.8), rgb(99, 69, 145).
Aa
White text reads best on this color (7.52:1).
About this color
#634591 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.122 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.044 away. White text reads best on it, at 7.52:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.79:1 |
| White text | 7.52:1 |
Values
| HEX | #634591 |
| RGB | rgb(99, 69, 145) |
| HSL | hsl(264, 36%, 42%) |
| OKLCH | oklch(46% 0.122 299.8) |
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 #634591 | 7.52:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #634591 | 2.79:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #634591 text on white | 7.52:1 | AAA | Lc 85.9 | Fine for body text |
| #634591 text on black | 2.79:1 | Fails | Lc -16.1 | 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
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C6B9E2
oklch(81% 0.059 299.6)
-
Step 400
400
#A993D3
oklch(70.6% 0.095 299.8)
-
Step 500
500
#9577C7
oklch(63% 0.121 300.2)
-
Step 600
600
#805FB4
oklch(55.7% 0.131 300.1)
-
Step 700
700 (this color)
#634591
oklch(46% 0.122 299.8)
-
Step 800
800
#58407E
oklch(42.7% 0.102 300)
-
Step 900
900
#483765
oklch(37.7% 0.079 299.7)
-
Step 950
950
#2A203B
oklch(26.9% 0.05 300.1)
#634591 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) | #2A5494 | 0.084 |
| Deuteranopia (no green cones) | #33548F | 0.077 |
| Tritanopia (no blue cones) | #5A5364 | 0.093 |
| Achromatopsia (no color) | #545454 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634591
#634591
oklch(46% 0.122 299.8)
- #516000
#516000
oklch(46% 0.109 119.7)
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 #634591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.044
- Twilight #4E518B ΔE 0.047
- Blueberry #464196 ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.054
- Dusk #4E5481 ΔE 0.061
- Light Eggplant #894585 ΔE 0.074
- Dusky Blue #475F94 ΔE 0.077
- Dusty Grape #545775 ΔE 0.078
Use #634591 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.