#644E63
Closest named color: Dusty Grape (#545775). oklch(45.4% 0.044 327.7), rgb(100, 78, 99).
Aa
White text reads best on this color (7.46:1).
About this color
#644E63 is a medium-dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.044 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 0.040 away. White text reads best on it, at 7.46:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #644E63 |
| RGB | rgb(100, 78, 99) |
| HSL | hsl(303, 12%, 35%) |
| OKLCH | oklch(45.4% 0.044 327.7) |
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 #644E63 | 7.46:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #644E63 | 2.81:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #644E63 text on white | 7.46:1 | AAA | Lc 85.9 | Fine for body text |
| #644E63 text on black | 2.81:1 | Fails | Lc -16.1 | 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 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
#DED6DE
oklch(88.5% 0.014 325.7)
-
Step 300
300
#CABBC9
oklch(80.9% 0.026 327.9)
-
Step 400
400
#AF98AE
oklch(70.7% 0.041 327.4)
-
Step 500
500
#9B7F9A
oklch(63.2% 0.051 327.3)
-
Step 600
600
#866884
oklch(55.7% 0.056 328.5)
-
Step 700
700
#715670
oklch(49% 0.053 327.5)
-
Step 800
800 (this color)
#644E63
oklch(45.4% 0.044 327.7)
-
Step 900
900
#4C3B4B
oklch(37.7% 0.035 328.2)
-
Step 950
950
#2C232C
oklch(27% 0.021 326.1)
#644E63 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) | #4D5364 | 0.039 |
| Deuteranopia (no green cones) | #525662 | 0.037 |
| Tritanopia (no blue cones) | #665055 | 0.026 |
| Achromatopsia (no color) | #555555 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E63
#644E63
oklch(45.4% 0.044 327.7)
- #465D49
#465D49
oklch(45.3% 0.043 148.4)
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 #644E63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.040
- Brownish Purple #76424E ΔE 0.048
- Dusk #4E5481 ΔE 0.057
- YInMn Blue #415A77 ΔE 0.062
- Dark Mauve #874C62 ΔE 0.064
- Purple Brown #673A3F ΔE 0.067
- Slate #516572 ΔE 0.068
- Twilight #4E518B ΔE 0.072
Use #644E63 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.