#63299C
Closest named color: Rebecca Purple (#663399). oklch(42.6% 0.176 302.4), rgb(99, 41, 156).
Aa
White text reads best on this color (9.02:1).
About this color
#63299C is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.176 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 0.021 away. White text reads best on it, at 9.02:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.176) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #63299C |
| RGB | rgb(99, 41, 156) |
| HSL | hsl(270, 58%, 39%) |
| OKLCH | oklch(42.6% 0.176 302.4) |
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 #63299C | 9.02:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #63299C | 2.32:1 | Fails | Lc 14.1 | Not readable |
| #63299C text on white | 9.02:1 | AAA | Lc 89.9 | Fine for body text |
| #63299C text on black | 2.32:1 | Fails | Lc -12.3 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#E0D1F9
oklch(88.5% 0.057 302.3)
-
Step 300
300
#CDB1F8
oklch(80.9% 0.102 302.2)
-
Step 400
400
#B584F4
oklch(70.7% 0.164 302.6)
-
Step 500
500
#A360F0
oklch(63.1% 0.209 302.2)
-
Step 600
600
#8F3FDE
oklch(55.5% 0.228 302.4)
-
Step 700
700
#7A2FC1
oklch(49.1% 0.212 302.4)
-
Step 800
800 (this color)
#63299C
oklch(42.6% 0.176 302.4)
-
Step 900
900
#51287C
oklch(37.7% 0.137 302.7)
-
Step 950
950
#2F1949
oklch(27.1% 0.087 302.1)
#63299C 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) | #00489F | 0.127 |
| Deuteranopia (no green cones) | #00489A | 0.128 |
| Tritanopia (no blue cones) | #574560 | 0.128 |
| Achromatopsia (no color) | #494949 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63299C
#63299C
oklch(42.6% 0.176 302.4)
- #455700
#455700
oklch(42.6% 0.104 122.4)
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 #63299C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.021
- Chrysanthemum #560BAD ΔE 0.054
- Grape #7209B7 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.067
- Blueberry #464196 ΔE 0.069
- Imperial Purple #480CA8 ΔE 0.073
- Blue With A Hint Of Purple #533CC6 ΔE 0.082
- Bluey Purple #6241C7 ΔE 0.083
Use #63299C 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.