#644E73
Closest named color: Dusty Grape (#545775). oklch(46.1% 0.064 311.1), rgb(100, 78, 115).
Aa
White text reads best on this color (7.29:1).
About this color
#644E73 is a medium-dark, muted purple. In OKLCH its lightness is 46%, its chroma 0.064 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.034 away. White text reads best on it, at 7.29:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.064) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #644E73 |
| RGB | rgb(100, 78, 115) |
| HSL | hsl(276, 19%, 38%) |
| OKLCH | oklch(46.1% 0.064 311.1) |
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 #644E73 | 7.29:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #644E73 | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #644E73 text on white | 7.29:1 | AAA | Lc 85.3 | Fine for body text |
| #644E73 text on black | 2.87:1 | Fails | Lc -16.7 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#ECE8EE
oklch(93.6% 0.009 314.8)
-
Step 200
200
#DDD6E2
oklch(88.5% 0.018 311.6)
-
Step 300
300
#C7BBD0
oklch(80.8% 0.032 310.9)
-
Step 400
400
#AB98B8
oklch(70.7% 0.051 311.6)
-
Step 500
500
#967FA6
oklch(63.1% 0.063 311.2)
-
Step 600
600
#806891
oklch(55.6% 0.068 310.8)
-
Step 700
700 (this color)
#644E73
oklch(46.1% 0.064 311.1)
-
Step 800
800
#584765
oklch(42.7% 0.053 310)
-
Step 900
900
#493B52
oklch(37.6% 0.042 311.9)
-
Step 950
950
#2B2330
oklch(27.1% 0.026 312.3)
#644E73 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) | #485574 | 0.047 |
| Deuteranopia (no green cones) | #4D5772 | 0.043 |
| Tritanopia (no blue cones) | #63535B | 0.047 |
| Achromatopsia (no color) | #565656 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E73
#644E73
oklch(46.1% 0.064 311.1)
- #4C6039
#4C6039
oklch(46.2% 0.065 130.7)
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 #644E73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.034
- Dusk #4E5481 ΔE 0.041
- Twilight #4E518B ΔE 0.051
- YInMn Blue #415A77 ΔE 0.059
- Brownish Purple #76424E ΔE 0.065
- Muted Purple #805B87 ΔE 0.068
- Dull Purple #84597E ΔE 0.068
- Dark Mauve #874C62 ΔE 0.068
Use #644E73 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.