#644D7B
Closest named color: Dusk (#4E5481). oklch(46.3% 0.077 306.6), rgb(100, 77, 123).
Aa
White text reads best on this color (7.26:1).
About this color
#644D7B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.077 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.038 away. White text reads best on it, at 7.26:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.88:1 |
| White text | 7.26:1 |
Values
| HEX | #644D7B |
| RGB | rgb(100, 77, 123) |
| HSL | hsl(270, 23%, 39%) |
| OKLCH | oklch(46.3% 0.077 306.6) |
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 #644D7B | 7.26:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #644D7B | 2.88:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #644D7B text on white | 7.26:1 | AAA | Lc 85.2 | Fine for body text |
| #644D7B text on black | 2.88:1 | Fails | Lc -16.8 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#ECE8F0
oklch(93.6% 0.011 308.3)
-
Step 200
200
#DCD6E4
oklch(88.5% 0.02 305.2)
-
Step 300
300
#C7BBD4
oklch(81% 0.037 307.1)
-
Step 400
400
#AA97BF
oklch(70.7% 0.061 306.4)
-
Step 500
500
#957DAE
oklch(63% 0.077 306.6)
-
Step 600
600
#80669A
oklch(55.6% 0.084 306.7)
-
Step 700
700 (this color)
#644D7B
oklch(46.3% 0.077 306.6)
-
Step 800
800
#58456B
oklch(42.6% 0.066 306.7)
-
Step 900
900
#483B57
oklch(37.8% 0.05 305.4)
-
Step 950
950
#2A2233
oklch(26.9% 0.033 305.8)
#644D7B 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) | #43567D | 0.054 |
| Deuteranopia (no green cones) | #48577A | 0.050 |
| Tritanopia (no blue cones) | #61545E | 0.058 |
| Achromatopsia (no color) | #575757 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644D7B
#644D7B
oklch(46.3% 0.077 306.6)
- #4E612F
#4E612F
oklch(46.4% 0.077 126.4)
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 #644D7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.038
- Dusty Grape #545775 ΔE 0.040
- Twilight #4E518B ΔE 0.043
- YInMn Blue #415A77 ΔE 0.064
- Muted Purple #805B87 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.067
- Dull Purple #84597E ΔE 0.069
- Denim Blue #3B5B92 ΔE 0.071
Use #644D7B 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.