#645384
Closest named color: Dusk (#4E5481). oklch(48% 0.079 299.4), rgb(100, 83, 132).
Aa
White text reads best on this color (6.74:1).
About this color
#645384 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.079 and its hue 299°. 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 6.74:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.079) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.11:1 |
| White text | 6.74:1 |
Values
| HEX | #645384 |
| RGB | rgb(100, 83, 132) |
| HSL | hsl(261, 23%, 42%) |
| OKLCH | oklch(48% 0.079 299.4) |
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 #645384 | 6.74:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #645384 | 3.11:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #645384 text on white | 6.74:1 | AA | Lc 83.2 | Fine for body text |
| #645384 text on black | 3.11:1 | AA large text | Lc -18.7 | 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
#DBD6E6
oklch(88.5% 0.022 300.2)
-
Step 300
300
#C4BCD6
oklch(81% 0.037 299.6)
-
Step 400
400
#A699C2
oklch(70.8% 0.061 299.4)
-
Step 500
500
#907FB3
oklch(63.1% 0.079 299.1)
-
Step 600
600
#7A689E
oklch(55.6% 0.084 299)
-
Step 700
700 (this color)
#645384
oklch(48% 0.079 299.4)
-
Step 800
800
#54476E
oklch(42.8% 0.065 299)
-
Step 900
900
#453B59
oklch(37.6% 0.052 299.2)
-
Step 950
950
#292334
oklch(27.1% 0.032 300.5)
#645384 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) | #475B86 | 0.046 |
| Deuteranopia (no green cones) | #4A5B83 | 0.044 |
| Tritanopia (no blue cones) | #5E5B65 | 0.063 |
| Achromatopsia (no color) | #5B5B5B | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645384
#645384
oklch(48% 0.079 299.4)
- #58642D
#58642D
oklch(48% 0.08 119.7)
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 #645384, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.035
- Twilight #4E518B ΔE 0.038
- Dusty Grape #545775 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.053
- Muted Purple #805B87 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.061
- Dull Purple #84597E ΔE 0.062
Use #645384 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.