#645781
Closest named color: Dusty Grape (#545775). oklch(48.6% 0.068 298.1), rgb(100, 87, 129).
Aa
White text reads best on this color (6.51:1).
About this color
#645781 is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.068 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.033 away. White text reads best on it, at 6.51:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.068) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.22:1 |
| White text | 6.51:1 |
Values
| HEX | #645781 |
| RGB | rgb(100, 87, 129) |
| HSL | hsl(259, 19%, 42%) |
| OKLCH | oklch(48.6% 0.068 298.1) |
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 #645781 | 6.51:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #645781 | 3.22:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #645781 text on white | 6.51:1 | AA | Lc 82.3 | Fine for body text |
| #645781 text on black | 3.22:1 | AA large text | Lc -19.6 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E4
oklch(88.5% 0.018 296.6)
-
Step 300
300
#C3BCD4
oklch(80.8% 0.034 299)
-
Step 400
400
#A49ABE
oklch(70.7% 0.053 297.8)
-
Step 500
500
#8E81AD
oklch(63.1% 0.067 298)
-
Step 600
600
#786A99
oklch(55.6% 0.073 297.6)
-
Step 700
700 (this color)
#645781
oklch(48.6% 0.068 298.1)
-
Step 800
800
#53486A
oklch(42.7% 0.057 298.8)
-
Step 900
900
#443D56
oklch(37.8% 0.043 297.1)
-
Step 950
950
#282432
oklch(27.1% 0.026 297.7)
#645781 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) | #4D5E83 | 0.038 |
| Deuteranopia (no green cones) | #4F5D80 | 0.035 |
| Tritanopia (no blue cones) | #5F5E66 | 0.055 |
| Achromatopsia (no color) | #5E5E5E | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645781
#645781
oklch(48.6% 0.068 298.1)
- #5C6537
#5C6537
oklch(48.7% 0.068 118.1)
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 #645781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.033
- Dusk #4E5481 ΔE 0.037
- Twilight #4E518B ΔE 0.045
- Dusky Blue #475F94 ΔE 0.050
- Muted Purple #805B87 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.056
- Dull Purple #84597E ΔE 0.056
- Dusty Purple #825F87 ΔE 0.058
Use #645781 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.