#645B85
Closest named color: Dusty Grape (#545775). oklch(49.7% 0.067 293.7), rgb(100, 91, 133).
Aa
White text reads best on this color (6.21:1).
About this color
#645B85 is a medium-dark, muted purple. In OKLCH its lightness is 50%, its chroma 0.067 and its hue 294°. 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 6.21:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.37:1 |
| White text | 6.21:1 |
Values
| HEX | #645B85 |
| RGB | rgb(100, 91, 133) |
| HSL | hsl(253, 19%, 44%) |
| OKLCH | oklch(49.7% 0.067 293.7) |
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 #645B85 | 6.21:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #645B85 | 3.37:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #645B85 text on white | 6.21:1 | AA | Lc 81.0 | Fine for body text |
| #645B85 text on black | 3.37:1 | AA large text | Lc -20.9 | 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 700.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#D9D7E4
oklch(88.5% 0.018 293.1)
-
Step 300
300
#C1BDD4
oklch(80.9% 0.032 293.6)
-
Step 400
400
#A29BBE
oklch(70.7% 0.051 294.2)
-
Step 500
500
#8B82AE
oklch(63.1% 0.066 293.8)
-
Step 600
600
#756B9A
oklch(55.5% 0.073 293.7)
-
Step 700
700 (this color)
#645B85
oklch(49.7% 0.067 293.7)
-
Step 800
800
#50496B
oklch(42.7% 0.056 293.3)
-
Step 900
900
#423D57
oklch(37.6% 0.044 293)
-
Step 950
950
#272433
oklch(27% 0.028 293.6)
#645B85 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) | #516187 | 0.031 |
| Deuteranopia (no green cones) | #526084 | 0.029 |
| Tritanopia (no blue cones) | #5D626A | 0.056 |
| Achromatopsia (no color) | #616161 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645B85
#645B85
oklch(49.7% 0.067 293.7)
- #626739
#626739
oklch(49.8% 0.067 113.9)
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 #645B85, 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 0.042
- Dusky Blue #475F94 ΔE 0.046
- Muted Purple #805B87 ΔE 0.047
- Twilight #4E518B ΔE 0.050
- Dusty Purple #825F87 ΔE 0.053
- Dull Purple #84597E ΔE 0.055
- Slate #516572 ΔE 0.056
Use #645B85 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.