#644789
Closest named color: Twilight (#4E518B). oklch(45.9% 0.108 302.7), rgb(100, 71, 137).
Aa
White text reads best on this color (7.48:1).
About this color
#644789 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.108 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.042 away. White text reads best on it, at 7.48:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #644789 |
| RGB | rgb(100, 71, 137) |
| HSL | hsl(266, 32%, 41%) |
| OKLCH | oklch(45.9% 0.108 302.7) |
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 #644789 | 7.48:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #644789 | 2.80:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #644789 text on white | 7.48:1 | AAA | Lc 85.9 | Fine for body text |
| #644789 text on black | 2.80:1 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F2
oklch(93.7% 0.014 304.1)
-
Step 200
200
#DDD5E9
oklch(88.5% 0.028 303.9)
-
Step 300
300
#C7B9DD
oklch(80.9% 0.052 302.9)
-
Step 400
400
#AB94CC
oklch(70.7% 0.084 303.1)
-
Step 500
500
#9679BF
oklch(63.1% 0.107 302.5)
-
Step 600
600
#8161AB
oklch(55.6% 0.116 302.7)
-
Step 700
700 (this color)
#644789
oklch(45.9% 0.108 302.7)
-
Step 800
800
#594277
oklch(42.8% 0.089 302.8)
-
Step 900
900
#493860
oklch(37.7% 0.069 302.8)
-
Step 950
950
#2B2138
oklch(27% 0.044 303.6)
#644789 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) | #34548B | 0.075 |
| Deuteranopia (no green cones) | #3B5587 | 0.070 |
| Tritanopia (no blue cones) | #5D5361 | 0.083 |
| Achromatopsia (no color) | #555555 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644789
#644789
oklch(45.9% 0.108 302.7)
- #4D6109
#4D6109
oklch(46% 0.108 122.9)
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 #644789, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.042
- Dusk #4E5481 ΔE 0.052
- Rebecca Purple #663399 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.059
- Blueberry #464196 ΔE 0.060
- Dusty Grape #545775 ΔE 0.066
- Light Eggplant #894585 ΔE 0.069
- Dusky Blue #475F94 ΔE 0.073
Use #644789 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.