#64427E
Closest named color: Twilight (#4E518B). oklch(44.4% 0.102 308.9), rgb(100, 66, 126).
Aa
White text reads best on this color (8.00:1).
About this color
#64427E is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.102 and its hue 309°. 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 8.00:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #64427E |
| RGB | rgb(100, 66, 126) |
| HSL | hsl(274, 31%, 38%) |
| OKLCH | oklch(44.4% 0.102 308.9) |
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 #64427E | 8.00:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #64427E | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #64427E text on white | 8.00:1 | AAA | Lc 87.6 | Fine for body text |
| #64427E 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
#DFD4EA
oklch(88.5% 0.032 308.1)
-
Step 300
300
#CCB7DE
oklch(81% 0.059 309.3)
-
Step 400
400
#B290CE
oklch(70.7% 0.096 309.1)
-
Step 500
500
#9F74C1
oklch(63.2% 0.121 309)
-
Step 600
600
#8A5BAD
oklch(55.6% 0.132 309.2)
-
Step 700
700
#754A95
oklch(49.1% 0.124 309)
-
Step 800
800 (this color)
#64427E
oklch(44.4% 0.102 308.9)
-
Step 900
900
#4E3561
oklch(37.7% 0.078 309.2)
-
Step 950
950
#2E1F39
oklch(27% 0.051 309.8)
#64427E 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) | #344F80 | 0.079 |
| Deuteranopia (no green cones) | #3D517C | 0.072 |
| Tritanopia (no blue cones) | #614C5A | 0.073 |
| Achromatopsia (no color) | #505050 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64427E
#64427E
oklch(44.4% 0.102 308.9)
- #425E18
#425E18
oklch(44.4% 0.102 128.9)
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 #64427E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.052
- Dusk #4E5481 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.058
- Rebecca Purple #663399 ΔE 0.060
- Blueberry #464196 ΔE 0.066
- Dusty Grape #545775 ΔE 0.068
- Light Eggplant #894585 ΔE 0.072
- YInMn Blue #415A77 ΔE 0.086
Use #64427E 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.