#63307A
Closest named color: Rebecca Purple (#663399). oklch(41.1% 0.128 314), rgb(99, 48, 122).
Aa
White text reads best on this color (9.39:1).
About this color
#63307A is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.128 and its hue 314°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.051 away. White text reads best on it, at 9.39:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.23:1 |
| White text | 9.39:1 |
Values
| HEX | #63307A |
| RGB | rgb(99, 48, 122) |
| HSL | hsl(281, 44%, 33%) |
| OKLCH | oklch(41.1% 0.128 314) |
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 #63307A | 9.39:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #63307A | 2.23:1 | Fails | Lc 12.7 | Not readable |
| #63307A text on white | 9.39:1 | AAA | Lc 91.3 | Preferred for body text |
| #63307A text on black | 2.23:1 | Fails | Lc -11.1 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F4
oklch(93.6% 0.021 313.8)
-
Step 200
200
#E3D2ED
oklch(88.6% 0.041 313.2)
-
Step 300
300
#D2B3E3
oklch(80.9% 0.074 313.5)
-
Step 400
400
#BC89D5
oklch(70.7% 0.121 314.1)
-
Step 500
500
#AB6AC9
oklch(63.2% 0.152 314.3)
-
Step 600
600
#964FB6
oklch(55.6% 0.166 314.1)
-
Step 700
700
#803F9D
oklch(49.2% 0.155 314.1)
-
Step 800
800 (this color)
#63307A
oklch(41.1% 0.128 314)
-
Step 900
900
#542F66
oklch(37.7% 0.099 313.6)
-
Step 950
950
#311C3C
oklch(27% 0.063 313.1)
#63307A 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) | #1A437C | 0.115 |
| Deuteranopia (no green cones) | #2E4878 | 0.102 |
| Tritanopia (no blue cones) | #613D50 | 0.086 |
| Achromatopsia (no color) | #464646 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63307A
#63307A
oklch(41.1% 0.128 314)
- #2D5700
#2D5700
oklch(41% 0.118 134)
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 #63307A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.061
- Blueberry #464196 ΔE 0.076
- Purple #800080 ΔE 0.077
- Grape Purple #5D1451 ΔE 0.084
- Rich Purple #720058 ΔE 0.085
- Twilight #4E518B ΔE 0.088
- Velvet #750851 ΔE 0.089
Use #63307A 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.