#645180
Closest named color: Dusk (#4E5481). oklch(47.4% 0.077 302.1), rgb(100, 81, 128).
Aa
White text reads best on this color (6.92:1).
About this color
#645180 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.077 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.035 away. White text reads best on it, at 6.92:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #645180 |
| RGB | rgb(100, 81, 128) |
| HSL | hsl(264, 22%, 41%) |
| OKLCH | oklch(47.4% 0.077 302.1) |
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 #645180 | 6.92:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #645180 | 3.03:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #645180 text on white | 6.92:1 | AA | Lc 83.9 | Fine for body text |
| #645180 text on black | 3.03:1 | AA large text | Lc -18.0 | 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
#EBE8F0
oklch(93.6% 0.011 303.1)
-
Step 200
200
#DBD6E5
oklch(88.5% 0.021 301.1)
-
Step 300
300
#C5BBD5
oklch(80.8% 0.038 303)
-
Step 400
400
#A798C0
oklch(70.6% 0.06 302)
-
Step 500
500
#927FB0
oklch(63.2% 0.075 302.1)
-
Step 600
600
#7C679C
oklch(55.5% 0.084 301.9)
-
Step 700
700 (this color)
#645180
oklch(47.4% 0.077 302.1)
-
Step 800
800
#55466C
oklch(42.6% 0.064 301.9)
-
Step 900
900
#463B58
oklch(37.6% 0.05 301.4)
-
Step 950
950
#292333
oklch(27% 0.03 301.6)
#645180 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) | #465982 | 0.048 |
| Deuteranopia (no green cones) | #4A5A7F | 0.046 |
| Tritanopia (no blue cones) | #5F5862 | 0.060 |
| Achromatopsia (no color) | #5A5A5A | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645180
#645180
oklch(47.4% 0.077 302.1)
- #54632F
#54632F
oklch(47.4% 0.078 122.7)
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 #645180, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.035
- Dusty Grape #545775 ΔE 0.038
- Twilight #4E518B ΔE 0.039
- Dusky Blue #475F94 ΔE 0.058
- Muted Purple #805B87 ΔE 0.059
- YInMn Blue #415A77 ΔE 0.061
- Dull Purple #84597E ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.065
Use #645180 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.