#644589
Closest named color: Twilight (#4E518B). oklch(45.6% 0.111 303.3), rgb(100, 69, 137).
Aa
White text reads best on this color (7.62:1).
About this color
#644589 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.111 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.045 away. White text reads best on it, at 7.62:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #644589 |
| RGB | rgb(100, 69, 137) |
| HSL | hsl(267, 33%, 40%) |
| OKLCH | oklch(45.6% 0.111 303.3) |
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 #644589 | 7.62:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #644589 | 2.75:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #644589 text on white | 7.62:1 | AAA | Lc 86.3 | Fine for body text |
| #644589 text on black | 2.75:1 | Fails | Lc -15.8 | 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 800.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DED4ED
oklch(88.6% 0.036 303.8)
-
Step 300
300
#C9B7E4
oklch(80.9% 0.065 303.2)
-
Step 400
400
#AE90D6
oklch(70.6% 0.105 303.5)
-
Step 500
500
#9A73CB
oklch(63% 0.134 303.2)
-
Step 600
600
#855AB8
oklch(55.5% 0.146 303.1)
-
Step 700
700
#714A9E
oklch(49.2% 0.134 303.3)
-
Step 800
800 (this color)
#644589
oklch(45.6% 0.111 303.3)
-
Step 900
900
#4B3567
oklch(37.8% 0.086 302.8)
-
Step 950
950
#2C1F3C
oklch(27% 0.055 303.6)
#644589 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) | #31538B | 0.080 |
| Deuteranopia (no green cones) | #395487 | 0.074 |
| Tritanopia (no blue cones) | #5E5160 | 0.084 |
| Achromatopsia (no color) | #545454 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644589
#644589
oklch(45.6% 0.111 303.3)
- #4B6002
#4B6002
oklch(45.5% 0.111 123.2)
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 #644589, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.045
- Rebecca Purple #663399 ΔE 0.051
- Dusk #4E5481 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.056
- Blueberry #464196 ΔE 0.059
- Light Eggplant #894585 ΔE 0.070
- Dusty Grape #545775 ΔE 0.070
- Dusky Blue #475F94 ΔE 0.078
Use #644589 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.