#644F68
Closest named color: Dusty Grape (#545775). oklch(45.8% 0.048 320.9), rgb(100, 79, 104).
Aa
White text reads best on this color (7.34:1).
About this color
#644F68 is a medium-dark, muted purple. In OKLCH its lightness is 46%, its chroma 0.048 and its hue 321°. 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 7.34:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.86:1 |
| White text | 7.34:1 |
Values
| HEX | #644F68 |
| RGB | rgb(100, 79, 104) |
| HSL | hsl(290, 14%, 36%) |
| OKLCH | oklch(45.8% 0.048 320.9) |
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 #644F68 | 7.34:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #644F68 | 2.86:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #644F68 text on white | 7.34:1 | AAA | Lc 85.5 | Fine for body text |
| #644F68 text on black | 2.86:1 | Fails | Lc -16.5 | 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
#ECE8ED
oklch(93.6% 0.008 319.4)
-
Step 200
200
#DED6DF
oklch(88.5% 0.015 322.3)
-
Step 300
300
#C9BBCC
oklch(80.9% 0.028 320.3)
-
Step 400
400
#AE98B2
oklch(70.7% 0.045 321.1)
-
Step 500
500
#9A7E9F
oklch(63.1% 0.058 321.2)
-
Step 600
600
#84688A
oklch(55.7% 0.061 320.3)
-
Step 700
700
#705675
oklch(49.1% 0.058 320.9)
-
Step 800
800 (this color)
#644F68
oklch(45.8% 0.048 320.9)
-
Step 900
900
#4B3B4E
oklch(37.7% 0.038 321)
-
Step 950
950
#2C232E
oklch(27.1% 0.024 320.1)
#644F68 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) | #4D5569 | 0.039 |
| Deuteranopia (no green cones) | #515767 | 0.038 |
| Tritanopia (no blue cones) | #655158 | 0.029 |
| Achromatopsia (no color) | #565656 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644F68
#644F68
oklch(45.8% 0.048 320.9)
- #495E45
#495E45
oklch(45.7% 0.047 140.6)
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 #644F68, 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 0.051
- Brownish Purple #76424E ΔE 0.053
- YInMn Blue #415A77 ΔE 0.059
- Dark Mauve #874C62 ΔE 0.064
- Twilight #4E518B ΔE 0.066
- Slate #516572 ΔE 0.066
- Dull Purple #84597E ΔE 0.072
Use #644F68 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.