#645D85
Closest named color: Dusty Grape (#545775). oklch(50.1% 0.063 292), rgb(100, 93, 133).
Aa
White text reads best on this color (6.09:1).
About this color
#645D85 is a medium-dark, muted purple. In OKLCH its lightness is 50%, its chroma 0.063 and its hue 292°. 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 6.09:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #645D85 |
| RGB | rgb(100, 93, 133) |
| HSL | hsl(251, 18%, 44%) |
| OKLCH | oklch(50.1% 0.063 292) |
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 #645D85 | 6.09:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #645D85 | 3.44:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #645D85 text on white | 6.09:1 | AA | Lc 80.4 | Fine for body text |
| #645D85 text on black | 3.44:1 | AA large text | Lc -21.4 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#D9D7E4
oklch(88.5% 0.018 293.1)
-
Step 300
300
#C0BDD3
oklch(80.8% 0.031 292)
-
Step 400
400
#A19CBD
oklch(70.8% 0.048 292.1)
-
Step 500
500
#8A83AD
oklch(63.1% 0.063 292.1)
-
Step 600
600
#746C98
oklch(55.6% 0.068 292.4)
-
Step 700
700 (this color)
#645D85
oklch(50.1% 0.063 292)
-
Step 800
800
#4F4A6A
oklch(42.7% 0.053 291.2)
-
Step 900
900
#423E56
oklch(37.8% 0.041 292)
-
Step 950
950
#262432
oklch(26.9% 0.026 291.1)
#645D85 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) | #536387 | 0.028 |
| Deuteranopia (no green cones) | #536184 | 0.027 |
| Tritanopia (no blue cones) | #5D646B | 0.054 |
| Achromatopsia (no color) | #626262 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645D85
#645D85
oklch(50.1% 0.063 292)
- #64673C
#64673C
oklch(50% 0.063 111.9)
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 #645D85, 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 0.045
- Dusky Blue #475F94 ΔE 0.046
- Muted Purple #805B87 ΔE 0.047
- Dusty Purple #825F87 ΔE 0.051
- Slate #516572 ΔE 0.052
- Twilight #4E518B ΔE 0.054
- Dull Purple #84597E ΔE 0.054
Use #645D85 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.