#644E75
Closest named color: Dusty Grape (#545775). oklch(46.2% 0.067 309.7), rgb(100, 78, 117).
Aa
White text reads best on this color (7.27:1).
About this color
#644E75 is a medium-dark, muted purple. In OKLCH its lightness is 46%, its chroma 0.067 and its hue 310°. 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 7.27:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #644E75 |
| RGB | rgb(100, 78, 117) |
| HSL | hsl(274, 20%, 38%) |
| OKLCH | oklch(46.2% 0.067 309.7) |
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 #644E75 | 7.27:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #644E75 | 2.88:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #644E75 text on white | 7.27:1 | AAA | Lc 85.2 | Fine for body text |
| #644E75 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
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DDD6E2
oklch(88.5% 0.018 311.6)
-
Step 300
300
#C7BBD1
oklch(80.9% 0.033 309.9)
-
Step 400
400
#AA98B9
oklch(70.6% 0.051 309.6)
-
Step 500
500
#967FA8
oklch(63.2% 0.066 309.9)
-
Step 600
600
#806893
oklch(55.7% 0.071 309.6)
-
Step 700
700 (this color)
#644E75
oklch(46.2% 0.067 309.7)
-
Step 800
800
#584666
oklch(42.6% 0.056 309.7)
-
Step 900
900
#493B53
oklch(37.7% 0.044 310.8)
-
Step 950
950
#2A2331
oklch(27% 0.027 307.3)
#644E75 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) | #475677 | 0.048 |
| Deuteranopia (no green cones) | #4C5774 | 0.044 |
| Tritanopia (no blue cones) | #62535C | 0.048 |
| Achromatopsia (no color) | #575757 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E75
#644E75
oklch(46.2% 0.067 309.7)
- #4C6037
#4C6037
oklch(46.1% 0.067 129.9)
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 #644E75, 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 0.040
- Twilight #4E518B ΔE 0.049
- YInMn Blue #415A77 ΔE 0.060
- Muted Purple #805B87 ΔE 0.067
- Dull Purple #84597E ΔE 0.068
- Brownish Purple #76424E ΔE 0.068
- Dark Mauve #874C62 ΔE 0.070
Use #644E75 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.