#64427F
Closest named color: Twilight (#4E518B). oklch(44.5% 0.103 308.5), rgb(100, 66, 127).
Aa
White text reads best on this color (7.99:1).
About this color
#64427F is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.103 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.052 away. White text reads best on it, at 7.99:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #64427F |
| RGB | rgb(100, 66, 127) |
| HSL | hsl(273, 32%, 38%) |
| OKLCH | oklch(44.5% 0.103 308.5) |
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 #64427F | 7.99:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #64427F | 2.62:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #64427F text on white | 7.99:1 | AAA | Lc 87.5 | Fine for body text |
| #64427F text on black | 2.62:1 | Fails | Lc -14.6 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EB
oklch(88.6% 0.033 307.1)
-
Step 300
300
#CCB7DF
oklch(81% 0.06 308.7)
-
Step 400
400
#B290CF
oklch(70.7% 0.097 308.7)
-
Step 500
500
#9F73C2
oklch(63% 0.124 308.8)
-
Step 600
600
#8A5BAF
oklch(55.7% 0.134 308.5)
-
Step 700
700
#754A96
oklch(49.1% 0.125 308.6)
-
Step 800
800 (this color)
#64427F
oklch(44.5% 0.103 308.5)
-
Step 900
900
#4E3562
oklch(37.8% 0.08 308.6)
-
Step 950
950
#2D1F39
oklch(26.9% 0.05 308.1)
#64427F 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) | #334F81 | 0.080 |
| Deuteranopia (no green cones) | #3C517D | 0.073 |
| Tritanopia (no blue cones) | #604C5A | 0.075 |
| Achromatopsia (no color) | #515151 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64427F
#64427F
oklch(44.5% 0.103 308.5)
- #425E16
#425E16
oklch(44.4% 0.103 128.6)
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 #64427F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.058
- Dusk #4E5481 ΔE 0.058
- Rebecca Purple #663399 ΔE 0.058
- Blueberry #464196 ΔE 0.065
- Dusty Grape #545775 ΔE 0.068
- Light Eggplant #894585 ΔE 0.072
- Denim Blue #3B5B92 ΔE 0.086
Use #64427F 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.