#644590
Closest named color: Rebecca Purple (#663399). oklch(46% 0.121 300.9), rgb(100, 69, 144).
Aa
White text reads best on this color (7.51:1).
About this color
#644590 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.121 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.045 away. White text reads best on it, at 7.51:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #644590 |
| RGB | rgb(100, 69, 144) |
| HSL | hsl(265, 35%, 42%) |
| OKLCH | oklch(46% 0.121 300.9) |
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 #644590 | 7.51:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #644590 | 2.79:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #644590 text on white | 7.51:1 | AAA | Lc 85.9 | Fine for body text |
| #644590 text on black | 2.79:1 | Fails | Lc -16.2 | 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
#EBE7F4
oklch(93.5% 0.018 300.1)
-
Step 200
200
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C7B8E1
oklch(80.8% 0.059 301.8)
-
Step 400
400
#AA93D2
oklch(70.7% 0.093 300.8)
-
Step 500
500
#9677C6
oklch(63.1% 0.12 301.1)
-
Step 600
600
#815FB3
oklch(55.7% 0.13 301)
-
Step 700
700 (this color)
#644590
oklch(46% 0.121 300.9)
-
Step 800
800
#59407D
oklch(42.7% 0.101 301.2)
-
Step 900
900
#493764
oklch(37.8% 0.077 301.2)
-
Step 950
950
#2A203B
oklch(26.9% 0.05 300.1)
#644590 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) | #2C5493 | 0.084 |
| Deuteranopia (no green cones) | #34548E | 0.078 |
| Tritanopia (no blue cones) | #5B5364 | 0.092 |
| Achromatopsia (no color) | #555555 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644590
#644590
oklch(46% 0.121 300.9)
- #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 #644590, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.045
- Twilight #4E518B ΔE 0.047
- Blueberry #464196 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.056
- Dusk #4E5481 ΔE 0.061
- Light Eggplant #894585 ΔE 0.072
- Dusty Grape #545775 ΔE 0.077
- Dusky Blue #475F94 ΔE 0.078
Use #644590 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.