#644190
Closest named color: Rebecca Purple (#663399). oklch(45.3% 0.127 302), rgb(100, 65, 144).
Aa
White text reads best on this color (7.77:1).
About this color
#644190 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.127 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.036 away. White text reads best on it, at 7.77:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.70:1 |
| White text | 7.77:1 |
Values
| HEX | #644190 |
| RGB | rgb(100, 65, 144) |
| HSL | hsl(267, 38%, 41%) |
| OKLCH | oklch(45.3% 0.127 302) |
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 #644190 | 7.77:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #644190 | 2.70:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #644190 text on white | 7.77:1 | AAA | Lc 86.7 | Fine for body text |
| #644190 text on black | 2.70:1 | Fails | Lc -15.4 | 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 800.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DED3F1
oklch(88.5% 0.042 302.2)
-
Step 300
300
#C9B6E9
oklch(80.9% 0.074 301.8)
-
Step 400
400
#AE8EDE
oklch(70.6% 0.119 301.8)
-
Step 500
500
#9B70D5
oklch(63.1% 0.152 301.9)
-
Step 600
600
#8656C2
oklch(55.6% 0.164 301.8)
-
Step 700
700
#7245A8
oklch(49.1% 0.154 302)
-
Step 800
800 (this color)
#644190
oklch(45.3% 0.127 302)
-
Step 900
900
#4C326D
oklch(37.7% 0.1 302.2)
-
Step 950
950
#2C1E40
oklch(27% 0.063 301.3)
#644190 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) | #245293 | 0.094 |
| Deuteranopia (no green cones) | #2F528E | 0.086 |
| Tritanopia (no blue cones) | #5C5062 | 0.096 |
| Achromatopsia (no color) | #525252 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644190
#644190
oklch(45.3% 0.127 302)
- #4C5F00
#4C5F00
oklch(45.3% 0.11 122.2)
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 #644190, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.052
- Blueberry #464196 ΔE 0.053
- Twilight #4E518B ΔE 0.054
- Dusk #4E5481 ΔE 0.068
- Light Eggplant #894585 ΔE 0.075
- Dusty Grape #545775 ΔE 0.085
- Dusky Blue #475F94 ΔE 0.086
Use #644190 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.