#63369B
Closest named color: Rebecca Purple (#663399). oklch(44.2% 0.158 300.5), rgb(99, 54, 155).
Aa
White text reads best on this color (8.29:1).
About this color
#63369B is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.158 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 0.009 away. White text reads best on it, at 8.29:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #63369B |
| RGB | rgb(99, 54, 155) |
| HSL | hsl(267, 48%, 41%) |
| OKLCH | oklch(44.2% 0.158 300.5) |
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 #63369B | 8.29:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #63369B | 2.53:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #63369B text on white | 8.29:1 | AAA | Lc 88.1 | Fine for body text |
| #63369B text on black | 2.53:1 | Fails | Lc -14.0 | 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
#ECE6F9
oklch(93.5% 0.026 300.3)
-
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
#B089EE
oklch(70.7% 0.148 300.5)
-
Step 500
500
#9E67E8
oklch(63.1% 0.189 300.8)
-
Step 600
600
#894AD6
oklch(55.6% 0.205 300.5)
-
Step 700
700
#753AB9
oklch(49.1% 0.19 300.8)
-
Step 800
800 (this color)
#63369B
oklch(44.2% 0.158 300.5)
-
Step 900
900
#4D2D77
oklch(37.6% 0.122 300.6)
-
Step 950
950
#2D1B46
oklch(27% 0.078 300.6)
#63369B 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) | #004E9E | 0.117 |
| Deuteranopia (no green cones) | #094E99 | 0.115 |
| Tritanopia (no blue cones) | #574C63 | 0.119 |
| Achromatopsia (no color) | #4E4E4E | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63369B
#63369B
oklch(44.2% 0.158 300.5)
- #4B5B00
#4B5B00
oklch(44.2% 0.106 120.8)
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 #63369B, 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 0.056
- Grape #7209B7 ΔE 0.071
- Chrysanthemum #560BAD ΔE 0.073
- Bluey Purple #6241C7 ΔE 0.073
- Blue With A Hint Of Purple #533CC6 ΔE 0.076
- Twilight #4E518B ΔE 0.080
Use #63369B 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.