#645487
Closest named color: Dusk (#4E5481). oklch(48.3% 0.082 297.7), rgb(100, 84, 135).
Aa
White text reads best on this color (6.64:1).
About this color
#645487 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.082 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.037 away. White text reads best on it, at 6.64:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #645487 |
| RGB | rgb(100, 84, 135) |
| HSL | hsl(259, 23%, 43%) |
| OKLCH | oklch(48.3% 0.082 297.7) |
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 #645487 | 6.64:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #645487 | 3.15:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #645487 text on white | 6.64:1 | AA | Lc 82.8 | Fine for body text |
| #645487 text on black | 3.15:1 | AA large text | Lc -19.1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#DAD6E6
oklch(88.4% 0.022 297.4)
-
Step 300
300
#C3BCD8
oklch(81% 0.04 296.9)
-
Step 400
400
#A599C4
oklch(70.8% 0.063 297.6)
-
Step 500
500
#8F7FB5
oklch(63.1% 0.082 297.6)
-
Step 600
600
#7968A0
oklch(55.6% 0.087 297.5)
-
Step 700
700 (this color)
#645487
oklch(48.3% 0.082 297.7)
-
Step 800
800
#534770
oklch(42.8% 0.068 296.9)
-
Step 900
900
#453B5A
oklch(37.6% 0.053 298.6)
-
Step 950
950
#282335
oklch(27% 0.034 296.8)
#645487 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) | #475D89 | 0.047 |
| Deuteranopia (no green cones) | #4A5C86 | 0.043 |
| Tritanopia (no blue cones) | #5D5D67 | 0.067 |
| Achromatopsia (no color) | #5C5C5C | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645487
#645487
oklch(48.3% 0.082 297.7)
- #5B652B
#5B652B
oklch(48.5% 0.082 117.7)
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 #645487, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.037
- Twilight #4E518B ΔE 0.038
- Dusty Grape #545775 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.050
- Muted Purple #805B87 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.060
- Dull Purple #84597E ΔE 0.061
- YInMn Blue #415A77 ΔE 0.063
Use #645487 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.