#64478B
Closest named color: Twilight (#4E518B). oklch(46.1% 0.111 301.9), rgb(100, 71, 139).
Aa
White text reads best on this color (7.45:1).
About this color
#64478B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.111 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.043 away. White text reads best on it, at 7.45:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #64478B |
| RGB | rgb(100, 71, 139) |
| HSL | hsl(266, 32%, 41%) |
| OKLCH | oklch(46.1% 0.111 301.9) |
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 #64478B | 7.45:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #64478B | 2.81:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #64478B text on white | 7.45:1 | AAA | Lc 85.7 | Fine for body text |
| #64478B text on black | 2.81:1 | Fails | Lc -16.3 | 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
#DCD5EA
oklch(88.5% 0.029 301)
-
Step 300
300
#C7B9DE
oklch(80.9% 0.054 302.4)
-
Step 400
400
#AA94CD
oklch(70.6% 0.085 302)
-
Step 500
500
#9679C1
oklch(63.2% 0.11 301.9)
-
Step 600
600
#8061AD
oklch(55.6% 0.118 301.5)
-
Step 700
700 (this color)
#64478B
oklch(46.1% 0.111 301.9)
-
Step 800
800
#584278
oklch(42.7% 0.09 301.5)
-
Step 900
900
#493861
oklch(37.8% 0.071 302.2)
-
Step 950
950
#2A2139
oklch(27% 0.045 300.7)
#64478B 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) | #33558D | 0.077 |
| Deuteranopia (no green cones) | #3A5589 | 0.071 |
| Tritanopia (no blue cones) | #5D5362 | 0.084 |
| Achromatopsia (no color) | #555555 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64478B
#64478B
oklch(46.1% 0.111 301.9)
- #4E6102
#4E6102
oklch(46% 0.111 122)
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 #64478B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.043
- Dusk #4E5481 ΔE 0.053
- Rebecca Purple #663399 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.058
- Blueberry #464196 ΔE 0.059
- Dusty Grape #545775 ΔE 0.068
- Light Eggplant #894585 ΔE 0.069
- Dusky Blue #475F94 ΔE 0.073
Use #64478B 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.