#644B70
Closest named color: Dusty Grape (#545775). oklch(45.4% 0.066 314.5), rgb(100, 75, 112).
Aa
White text reads best on this color (7.54:1).
About this color
#644B70 is a medium-dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.066 and its hue 314°. 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 7.54:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.066) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.78:1 |
| White text | 7.54:1 |
Values
| HEX | #644B70 |
| RGB | rgb(100, 75, 112) |
| HSL | hsl(281, 20%, 37%) |
| OKLCH | oklch(45.4% 0.066 314.5) |
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 #644B70 | 7.54:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #644B70 | 2.78:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #644B70 text on white | 7.54:1 | AAA | Lc 86.2 | Fine for body text |
| #644B70 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
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EDE8EF
oklch(93.7% 0.011 316.5)
-
Step 200
200
#DED5E3
oklch(88.4% 0.021 313.8)
-
Step 300
300
#CABAD2
oklch(81% 0.038 314.6)
-
Step 400
400
#AF95BC
oklch(70.6% 0.063 314.4)
-
Step 500
500
#9B7BAB
oklch(63% 0.079 314.2)
-
Step 600
600
#866496
oklch(55.6% 0.085 314.6)
-
Step 700
700
#715280
oklch(48.9% 0.08 314.3)
-
Step 800
800 (this color)
#644B70
oklch(45.4% 0.066 314.5)
-
Step 900
900
#4C3955
oklch(37.7% 0.053 314.6)
-
Step 950
950
#2C2232
oklch(27.1% 0.032 312.5)
#644B70 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) | #455371 | 0.052 |
| Deuteranopia (no green cones) | #4B556F | 0.048 |
| Tritanopia (no blue cones) | #635058 | 0.047 |
| Achromatopsia (no color) | #545454 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644B70
#644B70
oklch(45.4% 0.066 314.5)
- #475F38
#475F38
oklch(45.5% 0.067 134.1)
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 #644B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.040
- Dusk #4E5481 ΔE 0.046
- Twilight #4E518B ΔE 0.055
- Brownish Purple #76424E ΔE 0.061
- YInMn Blue #415A77 ΔE 0.064
- Dark Mauve #874C62 ΔE 0.069
- Dull Purple #84597E ΔE 0.073
- Muted Purple #805B87 ΔE 0.074
Use #644B70 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.