#644E6B
Closest named color: Dusty Grape (#545775). oklch(45.8% 0.054 317.9), rgb(100, 78, 107).
Aa
White text reads best on this color (7.38:1).
About this color
#644E6B is a medium-dark, muted purple. In OKLCH its lightness is 46%, its chroma 0.054 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.035 away. White text reads best on it, at 7.38:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #644E6B |
| RGB | rgb(100, 78, 107) |
| HSL | hsl(286, 16%, 36%) |
| OKLCH | oklch(45.8% 0.054 317.9) |
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 #644E6B | 7.38:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #644E6B | 2.84:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #644E6B text on white | 7.38:1 | AAA | Lc 85.6 | Fine for body text |
| #644E6B text on black | 2.84:1 | 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 800.
-
Step 50
50
#F7F5F7
oklch(97.2% 0.003 325.6)
-
Step 100
100
#ECE8EE
oklch(93.6% 0.009 314.8)
-
Step 200
200
#DED6E1
oklch(88.6% 0.017 316.9)
-
Step 300
300
#C9BBCE
oklch(80.9% 0.03 317.2)
-
Step 400
400
#AE97B5
oklch(70.7% 0.05 318.3)
-
Step 500
500
#9A7EA3
oklch(63.2% 0.063 317.9)
-
Step 600
600
#84668E
oklch(55.5% 0.07 317.5)
-
Step 700
700
#705579
oklch(49.1% 0.065 317.5)
-
Step 800
800 (this color)
#644E6B
oklch(45.8% 0.054 317.9)
-
Step 900
900
#4B3B50
oklch(37.8% 0.041 318)
-
Step 950
950
#2C222F
oklch(26.9% 0.028 318.3)
#644E6B 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) | #4B546C | 0.042 |
| Deuteranopia (no green cones) | #4F566A | 0.040 |
| Tritanopia (no blue cones) | #645158 | 0.035 |
| Achromatopsia (no color) | #565656 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E6B
#644E6B
oklch(45.8% 0.054 317.9)
- #495F41
#495F41
oklch(45.9% 0.054 137.5)
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 #644E6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.035
- Dusk #4E5481 ΔE 0.048
- Brownish Purple #76424E ΔE 0.056
- YInMn Blue #415A77 ΔE 0.059
- Twilight #4E518B ΔE 0.061
- Dark Mauve #874C62 ΔE 0.065
- Slate #516572 ΔE 0.069
- Dull Purple #84597E ΔE 0.071
Use #644E6B 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.