#63289E
Closest named color: Rebecca Purple (#663399). oklch(42.7% 0.179 301.9), rgb(99, 40, 158).
Aa
White text reads best on this color (9.02:1).
About this color
#63289E is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.179 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 0.024 away. White text reads best on it, at 9.02:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #63289E |
| RGB | rgb(99, 40, 158) |
| HSL | hsl(270, 60%, 39%) |
| OKLCH | oklch(42.7% 0.179 301.9) |
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 #63289E | 9.02:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #63289E | 2.32:1 | Fails | Lc 14.1 | Not readable |
| #63289E text on white | 9.02:1 | AAA | Lc 89.9 | Fine for body text |
| #63289E text on black | 2.32:1 | Fails | Lc -12.4 | 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
#F7F3FE
oklch(97% 0.015 302.6)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#E0D1FA
oklch(88.6% 0.058 301.9)
-
Step 300
300
#CDB1F9
oklch(81% 0.104 302)
-
Step 400
400
#B584F6
oklch(70.8% 0.167 302.2)
-
Step 500
500
#A35FF2
oklch(63.1% 0.213 301.9)
-
Step 600
600
#8F3DE1
oklch(55.5% 0.233 301.9)
-
Step 700
700
#7A2DC3
oklch(49.1% 0.216 302.1)
-
Step 800
800 (this color)
#63289E
oklch(42.7% 0.179 301.9)
-
Step 900
900
#50277E
oklch(37.6% 0.141 301.6)
-
Step 950
950
#2F184A
oklch(27% 0.09 301.9)
#63289E 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) | #0048A1 | 0.127 |
| Deuteranopia (no green cones) | #00489C | 0.128 |
| Tritanopia (no blue cones) | #564661 | 0.132 |
| Achromatopsia (no color) | #494949 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63289E
#63289E
oklch(42.7% 0.179 301.9)
- #465700
#465700
oklch(42.7% 0.103 121.8)
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 #63289E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.024
- Chrysanthemum #560BAD ΔE 0.051
- Grape #7209B7 ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.070
- Blueberry #464196 ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.071
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
- Bluey Purple #6241C7 ΔE 0.081
Use #63289E 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.