#644A75
Closest named color: Dusty Grape (#545775). oklch(45.4% 0.075 311.3), rgb(100, 74, 117).
Aa
White text reads best on this color (7.55:1).
About this color
#644A75 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.075 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.044 away. White text reads best on it, at 7.55:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.77:1 |
| White text | 7.55:1 |
Values
| HEX | #644A75 |
| RGB | rgb(100, 74, 117) |
| HSL | hsl(276, 23%, 37%) |
| OKLCH | oklch(45.4% 0.075 311.3) |
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 #644A75 | 7.55:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #644A75 | 2.77:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #644A75 text on white | 7.55:1 | AAA | Lc 86.2 | Fine for body text |
| #644A75 text on black | 2.77:1 | 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
#EDE8F0
oklch(93.7% 0.012 313.2)
-
Step 200
200
#DED5E5
oklch(88.5% 0.024 310.7)
-
Step 300
300
#CAB9D6
oklch(80.9% 0.044 311.4)
-
Step 400
400
#AF95C1
oklch(70.8% 0.069 311.3)
-
Step 500
500
#9B7AB1
oklch(63.1% 0.089 311.3)
-
Step 600
600
#86629D
oklch(55.6% 0.098 311.5)
-
Step 700
700
#715186
oklch(49% 0.09 311.1)
-
Step 800
800 (this color)
#644A75
oklch(45.4% 0.075 311.3)
-
Step 900
900
#4C3858
oklch(37.6% 0.059 312.3)
-
Step 950
950
#2C2134
oklch(26.9% 0.038 310.4)
#644A75 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) | #425377 | 0.057 |
| Deuteranopia (no green cones) | #485574 | 0.053 |
| Tritanopia (no blue cones) | #62505A | 0.053 |
| Achromatopsia (no color) | #545454 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A75
#644A75
oklch(45.4% 0.075 311.3)
- #475F31
#475F31
oklch(45.4% 0.076 131.4)
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 #644A75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.044
- Dusk #4E5481 ΔE 0.044
- Twilight #4E518B ΔE 0.049
- YInMn Blue #415A77 ΔE 0.067
- Brownish Purple #76424E ΔE 0.068
- Dark Mauve #874C62 ΔE 0.073
- Muted Purple #805B87 ΔE 0.073
- Dull Purple #84597E ΔE 0.074
Use #644A75 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.