#63369C
Closest named color: Rebecca Purple (#663399). oklch(44.3% 0.159 300.3), rgb(99, 54, 156).
Aa
White text reads best on this color (8.27:1).
About this color
#63369C is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.159 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 0.009 away. White text reads best on it, at 8.27:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #63369C |
| RGB | rgb(99, 54, 156) |
| HSL | hsl(266, 49%, 41%) |
| OKLCH | oklch(44.3% 0.159 300.3) |
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 #63369C | 8.27:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #63369C | 2.53:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #63369C text on white | 8.27:1 | AAA | Lc 88.1 | Fine for body text |
| #63369C text on black | 2.53:1 | Fails | Lc -14.1 | 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
#F7F4FD
oklch(97.2% 0.012 301.3)
-
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
#CAB3F4
oklch(80.9% 0.093 300.5)
-
Step 400
400
#B089EF
oklch(70.8% 0.149 300.3)
-
Step 500
500
#9D67E9
oklch(63.1% 0.19 300.2)
-
Step 600
600
#894AD7
oklch(55.6% 0.206 300.3)
-
Step 700
700
#743ABA
oklch(49.1% 0.191 300.1)
-
Step 800
800 (this color)
#63369C
oklch(44.3% 0.159 300.3)
-
Step 900
900
#4D2D78
oklch(37.7% 0.124 300.2)
-
Step 950
950
#2D1B46
oklch(27% 0.078 300.6)
#63369C 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) | #004E9F | 0.117 |
| Deuteranopia (no green cones) | #064E9A | 0.116 |
| Tritanopia (no blue cones) | #574D64 | 0.120 |
| Achromatopsia (no color) | #4E4E4E | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63369C
#63369C
oklch(44.3% 0.159 300.3)
- #4C5B00
#4C5B00
oklch(44.3% 0.105 120.1)
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 #63369C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.009
- Blueberry #464196 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.057
- Grape #7209B7 ΔE 0.070
- Bluey Purple #6241C7 ΔE 0.072
- Chrysanthemum #560BAD ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.075
- Twilight #4E518B ΔE 0.080
Use #63369C 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.