#645E96
Closest named color: Dusky Blue (#475F94). oklch(51.2% 0.088 287.8), rgb(100, 94, 150).
Aa
White text reads best on this color (5.86:1).
About this color
#645E96 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.088 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.041 away. White text reads best on it, at 5.86:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.58:1 |
| White text | 5.86:1 |
Values
| HEX | #645E96 |
| RGB | rgb(100, 94, 150) |
| HSL | hsl(246, 23%, 48%) |
| OKLCH | oklch(51.2% 0.088 287.8) |
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 #645E96 | 5.86:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #645E96 | 3.58:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #645E96 text on white | 5.86:1 | AA | Lc 79.3 | Fine for body text |
| #645E96 text on black | 3.58:1 | AA large text | Lc -22.5 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D8D7E8
oklch(88.5% 0.023 288.6)
-
Step 300
300
#BEBDDB
oklch(80.9% 0.042 286.9)
-
Step 400
400
#9E9AC9
oklch(70.6% 0.068 288.4)
-
Step 500
500
#8681BB
oklch(63% 0.086 287.6)
-
Step 600
600
#706AA7
oklch(55.5% 0.094 287.4)
-
Step 700
700 (this color)
#645E96
oklch(51.2% 0.088 287.8)
-
Step 800
800
#4D4875
oklch(42.7% 0.074 287.9)
-
Step 900
900
#403D5E
oklch(37.8% 0.056 287.6)
-
Step 950
950
#252437
oklch(27% 0.035 286.2)
#645E96 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) | #4D6698 | 0.037 |
| Deuteranopia (no green cones) | #4D6395 | 0.034 |
| Tritanopia (no blue cones) | #586873 | 0.074 |
| Achromatopsia (no color) | #656565 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645E96
#645E96
oklch(51.2% 0.088 287.8)
- #6C6A28
#6C6A28
oklch(51.2% 0.087 107.5)
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 #645E96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.041
- Muted Purple #805B87 ΔE 0.051
- Twilight #4E518B ΔE 0.054
- Dusk #4E5481 ΔE 0.055
- Dusty Purple #825F87 ΔE 0.055
- French Blue #436BAD ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.059
- Denim #3B638C ΔE 0.059
Use #645E96 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.