#645571
Closest named color: Dusty Grape (#545775). oklch(47.5% 0.048 308.9), rgb(100, 85, 113).
Aa
White text reads best on this color (6.81:1).
About this color
#645571 is a medium-dark, muted purple. In OKLCH its lightness is 47%, its chroma 0.048 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.026 away. White text reads best on it, at 6.81:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.07:1 |
| White text | 6.81:1 |
Values
| HEX | #645571 |
| RGB | rgb(100, 85, 113) |
| HSL | hsl(272, 14%, 39%) |
| OKLCH | oklch(47.5% 0.048 308.9) |
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 #645571 | 6.81:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #645571 | 3.07:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #645571 text on white | 6.81:1 | AA | Lc 83.5 | Fine for body text |
| #645571 text on black | 3.07:1 | AA large text | Lc -18.4 | 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 700.
-
Step 50
50
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9ED
oklch(93.7% 0.006 308.4)
-
Step 200
200
#DBD7E0
oklch(88.5% 0.013 306)
-
Step 300
300
#C5BDCC
oklch(80.9% 0.023 309.5)
-
Step 400
400
#A79BB3
oklch(70.8% 0.037 307.9)
-
Step 500
500
#9282A0
oklch(63.1% 0.048 309)
-
Step 600
600
#7C6B8B
oklch(55.5% 0.053 308.8)
-
Step 700
700 (this color)
#645571
oklch(47.5% 0.048 308.9)
-
Step 800
800
#554960
oklch(42.6% 0.04 308.4)
-
Step 900
900
#463D4E
oklch(37.6% 0.031 308.8)
-
Step 950
950
#29242E
oklch(27% 0.02 307.7)
#645571 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) | #505A72 | 0.033 |
| Deuteranopia (no green cones) | #535B70 | 0.031 |
| Tritanopia (no blue cones) | #63595F | 0.035 |
| Achromatopsia (no color) | #5B5B5B | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645571
#645571
oklch(47.5% 0.048 308.9)
- #546245
#546245
oklch(47.6% 0.048 129)
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 #645571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.026
- Dusk #4E5481 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.052
- Slate #516572 ΔE 0.053
- Twilight #4E518B ΔE 0.059
- Dull Purple #84597E ΔE 0.061
- Muted Purple #805B87 ΔE 0.062
- Dark Mauve #874C62 ΔE 0.066
Use #645571 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.