#644D63
Closest named color: Dusty Grape (#545775). oklch(45.2% 0.046 327.7), rgb(100, 77, 99).
Aa
White text reads best on this color (7.54:1).
About this color
#644D63 is a medium-dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.046 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.041 away. White text reads best on it, at 7.54:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.046) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.78:1 |
| White text | 7.54:1 |
Values
| HEX | #644D63 |
| RGB | rgb(100, 77, 99) |
| HSL | hsl(303, 13%, 35%) |
| OKLCH | oklch(45.2% 0.046 327.7) |
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 #644D63 | 7.54:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #644D63 | 2.78:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #644D63 text on white | 7.54:1 | AAA | Lc 86.2 | Fine for body text |
| #644D63 text on black | 2.78:1 | Fails | Lc -15.9 | 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
#EDE8EC
oklch(93.6% 0.008 332.1)
-
Step 200
200
#DFD6DE
oklch(88.6% 0.015 329.1)
-
Step 300
300
#CBBBCA
oklch(81% 0.027 327.7)
-
Step 400
400
#B098AE
oklch(70.8% 0.042 328.7)
-
Step 500
500
#9C7E9B
oklch(63.1% 0.055 327.3)
-
Step 600
600
#876785
oklch(55.6% 0.06 328.4)
-
Step 700
700
#725671
oklch(49.2% 0.055 327.5)
-
Step 800
800 (this color)
#644D63
oklch(45.2% 0.046 327.7)
-
Step 900
900
#4C3B4B
oklch(37.7% 0.035 328.2)
-
Step 950
950
#2D232C
oklch(27.1% 0.022 329.4)
#644D63 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) | #4C5264 | 0.041 |
| Deuteranopia (no green cones) | #515562 | 0.038 |
| Tritanopia (no blue cones) | #664F55 | 0.026 |
| Achromatopsia (no color) | #545454 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644D63
#644D63
oklch(45.2% 0.046 327.7)
- #455D47
#455D47
oklch(45.2% 0.046 146.9)
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 #644D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.041
- Brownish Purple #76424E ΔE 0.047
- Dusk #4E5481 ΔE 0.057
- YInMn Blue #415A77 ΔE 0.063
- Dark Mauve #874C62 ΔE 0.064
- Purple Brown #673A3F ΔE 0.065
- Slate #516572 ΔE 0.071
- Twilight #4E518B ΔE 0.072
Use #644D63 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.