#63478E
Closest named color: Twilight (#4E518B). oklch(46.1% 0.114 300.2), rgb(99, 71, 142).
Aa
White text reads best on this color (7.44:1).
About this color
#63478E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.114 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.042 away. White text reads best on it, at 7.44:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.82:1 |
| White text | 7.44:1 |
Values
| HEX | #63478E |
| RGB | rgb(99, 71, 142) |
| HSL | hsl(264, 33%, 42%) |
| OKLCH | oklch(46.1% 0.114 300.2) |
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 #63478E | 7.44:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #63478E | 2.82:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #63478E text on white | 7.44:1 | AAA | Lc 85.7 | Fine for body text |
| #63478E text on black | 2.82:1 | Fails | Lc -16.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DCD5EB
oklch(88.5% 0.031 300.3)
-
Step 300
300
#C6B9E0
oklch(80.9% 0.056 300.4)
-
Step 400
400
#A994D0
oklch(70.7% 0.089 300.2)
-
Step 500
500
#9479C4
oklch(63.1% 0.113 299.7)
-
Step 600
600
#7F61B0
oklch(55.7% 0.122 300)
-
Step 700
700 (this color)
#63478E
oklch(46.1% 0.114 300.2)
-
Step 800
800
#57417B
oklch(42.6% 0.096 299.8)
-
Step 900
900
#483863
oklch(37.8% 0.074 300)
-
Step 950
950
#2A213A
oklch(27% 0.047 299.9)
#63478E 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) | #305591 | 0.078 |
| Deuteranopia (no green cones) | #37558C | 0.072 |
| Tritanopia (no blue cones) | #5B5464 | 0.088 |
| Achromatopsia (no color) | #555555 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63478E
#63478E
oklch(46.1% 0.114 300.2)
- #516100
#516100
oklch(46.3% 0.11 120.2)
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 #63478E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.042
- Rebecca Purple #663399 ΔE 0.051
- Dusk #4E5481 ΔE 0.055
- Blueberry #464196 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.056
- Dusty Grape #545775 ΔE 0.071
- Light Eggplant #894585 ΔE 0.072
- Dusky Blue #475F94 ΔE 0.073
Use #63478E 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.