#644690
Closest named color: Twilight (#4E518B). oklch(46.2% 0.119 300.5), rgb(100, 70, 144).
Aa
White text reads best on this color (7.44:1).
About this color
#644690 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.119 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.046 away. White text reads best on it, at 7.44:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.82:1 |
| White text | 7.44:1 |
Values
| HEX | #644690 |
| RGB | rgb(100, 70, 144) |
| HSL | hsl(264, 35%, 42%) |
| OKLCH | oklch(46.2% 0.119 300.5) |
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 #644690 | 7.44:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #644690 | 2.82:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #644690 text on white | 7.44:1 | AAA | Lc 85.7 | Fine for body text |
| #644690 text on black | 2.82:1 | Fails | Lc -16.4 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C6B9E1
oklch(81% 0.057 300)
-
Step 400
400
#AA93D2
oklch(70.7% 0.093 300.8)
-
Step 500
500
#9578C6
oklch(63.2% 0.118 300.2)
-
Step 600
600
#805FB2
oklch(55.5% 0.128 300.6)
-
Step 700
700 (this color)
#644690
oklch(46.2% 0.119 300.5)
-
Step 800
800
#58417C
oklch(42.8% 0.097 300.3)
-
Step 900
900
#483764
oklch(37.6% 0.077 300.1)
-
Step 950
950
#2A213A
oklch(27% 0.047 299.9)
#644690 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) | #2D5593 | 0.083 |
| Deuteranopia (no green cones) | #35558E | 0.077 |
| Tritanopia (no blue cones) | #5B5464 | 0.092 |
| Achromatopsia (no color) | #555555 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644690
#644690
oklch(46.2% 0.119 300.5)
- #506100
#506100
oklch(46.2% 0.111 120.8)
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 #644690, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.046
- Rebecca Purple #663399 ΔE 0.047
- Blueberry #464196 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.057
- Dusk #4E5481 ΔE 0.059
- Light Eggplant #894585 ΔE 0.072
- Dusty Grape #545775 ΔE 0.076
- Dusky Blue #475F94 ΔE 0.076
Use #644690 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.