#644A86
Closest named color: Twilight (#4E518B). oklch(46.3% 0.098 302.7), rgb(100, 74, 134).
Aa
White text reads best on this color (7.32:1).
About this color
#644A86 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.098 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.039 away. White text reads best on it, at 7.32:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #644A86 |
| RGB | rgb(100, 74, 134) |
| HSL | hsl(266, 29%, 41%) |
| OKLCH | oklch(46.3% 0.098 302.7) |
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 #644A86 | 7.32:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #644A86 | 2.86:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #644A86 text on white | 7.32:1 | AAA | Lc 85.3 | Fine for body text |
| #644A86 text on black | 2.86:1 | Fails | Lc -16.7 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#EBE8F2
oklch(93.6% 0.014 299.8)
-
Step 200
200
#DCD5E8
oklch(88.4% 0.027 302.5)
-
Step 300
300
#C6BADB
oklch(80.9% 0.048 301.9)
-
Step 400
400
#AA95C8
oklch(70.6% 0.077 303.3)
-
Step 500
500
#957BBA
oklch(63.1% 0.097 302.7)
-
Step 600
600
#8063A6
oklch(55.6% 0.106 303.1)
-
Step 700
700 (this color)
#644A86
oklch(46.3% 0.098 302.7)
-
Step 800
800
#584374
oklch(42.7% 0.082 302.8)
-
Step 900
900
#48395D
oklch(37.7% 0.063 302.7)
-
Step 950
950
#2A2237
oklch(27.1% 0.04 301.3)
#644A86 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) | #3A5688 | 0.067 |
| Deuteranopia (no green cones) | #405684 | 0.062 |
| Tritanopia (no blue cones) | #5E5461 | 0.075 |
| Achromatopsia (no color) | #565656 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A86
#644A86
oklch(46.3% 0.098 302.7)
- #4F6119
#4F6119
oklch(46.2% 0.098 122.5)
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 #644A86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.039
- Dusk #4E5481 ΔE 0.045
- Dusty Grape #545775 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.064
- Blueberry #464196 ΔE 0.066
- Rebecca Purple #663399 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.068
- Light Eggplant #894585 ΔE 0.068
Use #644A86 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.