#644C6B
Closest named color: Dusty Grape (#545775). oklch(45.4% 0.058 318.5), rgb(100, 76, 107).
Aa
White text reads best on this color (7.53:1).
About this color
#644C6B is a medium-dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.058 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.038 away. White text reads best on it, at 7.53:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.78:1 |
| White text | 7.53:1 |
Values
| HEX | #644C6B |
| RGB | rgb(100, 76, 107) |
| HSL | hsl(286, 17%, 36%) |
| OKLCH | oklch(45.4% 0.058 318.5) |
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 #644C6B | 7.53:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #644C6B | 2.78:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #644C6B text on white | 7.53:1 | AAA | Lc 86.1 | Fine for body text |
| #644C6B 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EDE8EE
oklch(93.7% 0.01 320.5)
-
Step 200
200
#DFD5E1
oklch(88.5% 0.019 320.6)
-
Step 300
300
#CABACF
oklch(80.9% 0.034 318.1)
-
Step 400
400
#AF96B7
oklch(70.6% 0.055 317.9)
-
Step 500
500
#9B7CA5
oklch(63% 0.07 317.8)
-
Step 600
600
#866590
oklch(55.6% 0.076 318.2)
-
Step 700
700
#72547A
oklch(49.2% 0.069 319.1)
-
Step 800
800 (this color)
#644C6B
oklch(45.4% 0.058 318.5)
-
Step 900
900
#4C3A51
oklch(37.7% 0.045 318.8)
-
Step 950
950
#2C222F
oklch(26.9% 0.028 318.3)
#644C6B 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) | #48536C | 0.048 |
| Deuteranopia (no green cones) | #4E556A | 0.043 |
| Tritanopia (no blue cones) | #644F57 | 0.037 |
| Achromatopsia (no color) | #545454 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644C6B
#644C6B
oklch(45.4% 0.058 318.5)
- #465E3F
#465E3F
oklch(45.3% 0.057 138.7)
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 #644C6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.038
- Dusk #4E5481 ΔE 0.049
- Brownish Purple #76424E ΔE 0.055
- Twilight #4E518B ΔE 0.061
- YInMn Blue #415A77 ΔE 0.062
- Dark Mauve #874C62 ΔE 0.066
- Dull Purple #84597E ΔE 0.074
- Purple Brown #673A3F ΔE 0.074
Use #644C6B 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.