#63309A
Closest named color: Rebecca Purple (#663399). oklch(43.3% 0.165 301.9), rgb(99, 48, 154).
Aa
White text reads best on this color (8.67:1).
About this color
#63309A is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.165 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 0.009 away. White text reads best on it, at 8.67:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.41:1 |
| White text | 8.67:1 |
Values
| HEX | #63309A |
| RGB | rgb(99, 48, 154) |
| HSL | hsl(269, 52%, 40%) |
| OKLCH | oklch(43.3% 0.165 301.9) |
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 #63309A | 8.67:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #63309A | 2.41:1 | Fails | Lc 14.8 | Not readable |
| #63309A text on white | 8.67:1 | AAA | Lc 89.1 | Fine for body text |
| #63309A text on black | 2.41:1 | Fails | Lc -13.1 | 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
#EDE6FA
oklch(93.6% 0.028 301.7)
-
Step 200
200
#DFD1F7
oklch(88.4% 0.054 302.1)
-
Step 300
300
#CCB2F5
oklch(80.9% 0.097 302.1)
-
Step 400
400
#B387F0
oklch(70.8% 0.154 301.9)
-
Step 500
500
#A164EA
oklch(63.1% 0.197 302.1)
-
Step 600
600
#8D46D9
oklch(55.7% 0.214 301.9)
-
Step 700
700
#7836BC
oklch(49.2% 0.199 302)
-
Step 800
800 (this color)
#63309A
oklch(43.3% 0.165 301.9)
-
Step 900
900
#4F2B79
oklch(37.7% 0.128 301.8)
-
Step 950
950
#2E1A47
oklch(27% 0.082 301.7)
#63309A 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) | #004B9D | 0.122 |
| Deuteranopia (no green cones) | #004B98 | 0.123 |
| Tritanopia (no blue cones) | #584861 | 0.121 |
| Achromatopsia (no color) | #4B4B4B | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63309A
#63309A
oklch(43.3% 0.165 301.9)
- #475900
#475900
oklch(43.3% 0.105 122.2)
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 #63309A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.009
- Dark Slate Blue #483D8B ΔE 0.060
- Blueberry #464196 ΔE 0.061
- Chrysanthemum #560BAD ΔE 0.064
- Grape #7209B7 ΔE 0.065
- Bluey Purple #6241C7 ΔE 0.079
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
- Imperial Purple #480CA8 ΔE 0.081
Use #63309A 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.