#63369E
Closest named color: Rebecca Purple (#663399). oklch(44.5% 0.161 299.7), rgb(99, 54, 158).
Aa
White text reads best on this color (8.22:1).
About this color
#63369E is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.161 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 0.011 away. White text reads best on it, at 8.22:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.161) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.55:1 |
| White text | 8.22:1 |
Values
| HEX | #63369E |
| RGB | rgb(99, 54, 158) |
| HSL | hsl(266, 49%, 42%) |
| OKLCH | oklch(44.5% 0.161 299.7) |
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 #63369E | 8.22:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #63369E | 2.55:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #63369E text on white | 8.22:1 | AAA | Lc 87.9 | Fine for body text |
| #63369E text on black | 2.55:1 | Fails | Lc -14.2 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DED2F7
oklch(88.5% 0.052 300.1)
-
Step 300
300
#C9B3F5
oklch(80.8% 0.094 299.6)
-
Step 400
400
#AF89F0
oklch(70.7% 0.15 299.6)
-
Step 500
500
#9D67EB
oklch(63.2% 0.193 299.8)
-
Step 600
600
#8849D9
oklch(55.5% 0.21 299.6)
-
Step 700
700
#7439BC
oklch(49.1% 0.195 299.8)
-
Step 800
800 (this color)
#63369E
oklch(44.5% 0.161 299.7)
-
Step 900
900
#4D2D79
oklch(37.8% 0.125 299.8)
-
Step 950
950
#2D1B47
oklch(27% 0.08 300)
#63369E 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) | #004FA1 | 0.117 |
| Deuteranopia (no green cones) | #004E9C | 0.117 |
| Tritanopia (no blue cones) | #564D65 | 0.121 |
| Achromatopsia (no color) | #4F4F4F | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63369E
#63369E
oklch(44.5% 0.161 299.7)
- #4D5B00
#4D5B00
oklch(44.3% 0.105 119.5)
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 #63369E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.011
- Blueberry #464196 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.058
- Grape #7209B7 ΔE 0.068
- Bluey Purple #6241C7 ΔE 0.069
- Chrysanthemum #560BAD ΔE 0.071
- Blue With A Hint Of Purple #533CC6 ΔE 0.072
- Blurple #5539CC ΔE 0.079
Use #63369E 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.