#644F77
Closest named color: Dusty Grape (#545775). oklch(46.5% 0.068 307.9), rgb(100, 79, 119).
Aa
White text reads best on this color (7.17:1).
About this color
#644F77 is a medium-dark, muted purple. In OKLCH its lightness is 47%, its chroma 0.068 and its hue 308°. 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 7.17:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.068) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #644F77 |
| RGB | rgb(100, 79, 119) |
| HSL | hsl(272, 20%, 39%) |
| OKLCH | oklch(46.5% 0.068 307.9) |
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 #644F77 | 7.17:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #644F77 | 2.92:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #644F77 text on white | 7.17:1 | AAA | Lc 84.9 | Fine for body text |
| #644F77 text on black | 2.92:1 | Fails | Lc -17.1 | 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
#EBE8EF
oklch(93.5% 0.01 305.4)
-
Step 200
200
#DCD6E3
oklch(88.5% 0.019 306.6)
-
Step 300
300
#C6BBD1
oklch(80.8% 0.033 308)
-
Step 400
400
#AA98BA
oklch(70.7% 0.053 308.9)
-
Step 500
500
#957FA9
oklch(63.2% 0.067 308.3)
-
Step 600
600
#7F6895
oklch(55.7% 0.073 307.5)
-
Step 700
700 (this color)
#644F77
oklch(46.5% 0.068 307.9)
-
Step 800
800
#574767
oklch(42.7% 0.055 307)
-
Step 900
900
#483B54
oklch(37.6% 0.045 308)
-
Step 950
950
#2A2331
oklch(27% 0.027 307.3)
#644F77 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) | #485779 | 0.047 |
| Deuteranopia (no green cones) | #4C5876 | 0.044 |
| Tritanopia (no blue cones) | #62555E | 0.050 |
| Achromatopsia (no color) | #575757 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644F77
#644F77
oklch(46.5% 0.068 307.9)
- #4E6136
#4E6136
oklch(46.5% 0.069 128.3)
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 #644F77, 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 0.038
- Twilight #4E518B ΔE 0.047
- YInMn Blue #415A77 ΔE 0.059
- Muted Purple #805B87 ΔE 0.065
- Dull Purple #84597E ΔE 0.066
- Dusky Blue #475F94 ΔE 0.067
- Dark Mauve #874C62 ΔE 0.070
Use #644F77 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.