#633A96
Closest named color: Rebecca Purple (#663399). oklch(44.5% 0.146 301.2), rgb(99, 58, 150).
Aa
White text reads best on this color (8.15:1).
About this color
#633A96 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.146 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.016 away. White text reads best on it, at 8.15:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #633A96 |
| RGB | rgb(99, 58, 150) |
| HSL | hsl(267, 44%, 41%) |
| OKLCH | oklch(44.5% 0.146 301.2) |
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 #633A96 | 8.15:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #633A96 | 2.57:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #633A96 text on white | 8.15:1 | AAA | Lc 87.8 | Fine for body text |
| #633A96 text on black | 2.57:1 | Fails | Lc -14.3 | 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
#ECE6F8
oklch(93.5% 0.025 301.1)
-
Step 200
200
#DED2F4
oklch(88.4% 0.048 301.5)
-
Step 300
300
#CAB4EF
oklch(80.9% 0.085 301.6)
-
Step 400
400
#B08BE8
oklch(70.8% 0.137 301.3)
-
Step 500
500
#9D6BE0
oklch(63.1% 0.174 301.3)
-
Step 600
600
#884FCE
oklch(55.6% 0.189 301.1)
-
Step 700
700
#743FB2
oklch(49.1% 0.175 301.4)
-
Step 800
800 (this color)
#633A96
oklch(44.5% 0.146 301.2)
-
Step 900
900
#4D2F73
oklch(37.7% 0.114 301.5)
-
Step 950
950
#2D1C43
oklch(26.9% 0.072 301.9)
#633A96 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) | #034F99 | 0.113 |
| Deuteranopia (no green cones) | #1E4F94 | 0.103 |
| Tritanopia (no blue cones) | #594D62 | 0.110 |
| Achromatopsia (no color) | #4F4F4F | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633A96
#633A96
oklch(44.5% 0.146 301.2)
- #4B5C00
#4B5C00
oklch(44.4% 0.107 121.3)
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 #633A96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.016
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.051
- Twilight #4E518B ΔE 0.070
- Bluey Purple #6241C7 ΔE 0.079
- Grape #7209B7 ΔE 0.083
- Blue With A Hint Of Purple #533CC6 ΔE 0.083
- Chrysanthemum #560BAD ΔE 0.084
Use #633A96 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.