#633D92
Closest named color: Rebecca Purple (#663399). oklch(44.7% 0.136 301.8), rgb(99, 61, 146).
Aa
White text reads best on this color (8.03:1).
About this color
#633D92 is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.136 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.025 away. White text reads best on it, at 8.03:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #633D92 |
| RGB | rgb(99, 61, 146) |
| HSL | hsl(267, 41%, 41%) |
| OKLCH | oklch(44.7% 0.136 301.8) |
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 #633D92 | 8.03:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #633D92 | 2.61:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #633D92 text on white | 8.03:1 | AAA | Lc 87.5 | Fine for body text |
| #633D92 text on black | 2.61:1 | Fails | Lc -14.6 | 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 800.
-
Step 50
50
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#ECE7F7
oklch(93.7% 0.022 300.2)
-
Step 200
200
#DED3F2
oklch(88.5% 0.044 301.7)
-
Step 300
300
#CAB5EC
oklch(80.9% 0.079 302.1)
-
Step 400
400
#AF8DE3
oklch(70.8% 0.127 301.4)
-
Step 500
500
#9C6DDA
oklch(63% 0.163 301.8)
-
Step 600
600
#8752C8
oklch(55.5% 0.178 301.6)
-
Step 700
700
#7342AD
oklch(49.1% 0.165 301.7)
-
Step 800
800 (this color)
#633D92
oklch(44.7% 0.136 301.8)
-
Step 900
900
#4C3170
oklch(37.7% 0.106 301.3)
-
Step 950
950
#2D1D41
oklch(27% 0.067 302.7)
#633D92 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) | #185095 | 0.103 |
| Deuteranopia (no green cones) | #275090 | 0.094 |
| Tritanopia (no blue cones) | #5A4E61 | 0.103 |
| Achromatopsia (no color) | #505050 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633D92
#633D92
oklch(44.7% 0.136 301.8)
- #4B5D00
#4B5D00
oklch(44.7% 0.108 121.8)
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 #633D92, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.050
- Blueberry #464196 ΔE 0.051
- Twilight #4E518B ΔE 0.062
- Dusk #4E5481 ΔE 0.077
- Light Eggplant #894585 ΔE 0.082
- Bluey Purple #6241C7 ΔE 0.085
- Blue With A Hint Of Purple #533CC6 ΔE 0.089
Use #633D92 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.