#644289
Closest named color: Rebecca Purple (#663399). oklch(45% 0.116 304.2), rgb(100, 66, 137).
Aa
White text reads best on this color (7.82:1).
About this color
#644289 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.116 and its hue 304°. 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 7.82:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #644289 |
| RGB | rgb(100, 66, 137) |
| HSL | hsl(269, 35%, 40%) |
| OKLCH | oklch(45% 0.116 304.2) |
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 #644289 | 7.82:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #644289 | 2.68:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #644289 text on white | 7.82:1 | AAA | Lc 87.0 | Fine for body text |
| #644289 text on black | 2.68:1 | Fails | Lc -15.1 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE7F5
oklch(93.7% 0.02 305.3)
-
Step 200
200
#DED3EE
oklch(88.4% 0.038 304)
-
Step 300
300
#CAB6E5
oklch(80.9% 0.069 304.3)
-
Step 400
400
#B08FD8
oklch(70.7% 0.11 304.5)
-
Step 500
500
#9C72CD
oklch(63.1% 0.139 304)
-
Step 600
600
#8758BA
oklch(55.5% 0.152 304)
-
Step 700
700
#7348A0
oklch(49.2% 0.14 304.3)
-
Step 800
800 (this color)
#644289
oklch(45% 0.116 304.2)
-
Step 900
900
#4C3368
oklch(37.6% 0.091 304.1)
-
Step 950
950
#2D1F3D
oklch(27.1% 0.057 304.4)
#644289 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) | #2C518B | 0.087 |
| Deuteranopia (no green cones) | #365287 | 0.079 |
| Tritanopia (no blue cones) | #5E4F5F | 0.087 |
| Achromatopsia (no color) | #525252 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644289
#644289
oklch(45% 0.116 304.2)
- #485F00
#485F00
oklch(45% 0.112 124.4)
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 #644289, 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 0.051
- Dark Slate Blue #483D8B ΔE 0.053
- Blueberry #464196 ΔE 0.057
- Dusk #4E5481 ΔE 0.062
- Light Eggplant #894585 ΔE 0.072
- Dusty Grape #545775 ΔE 0.076
- Dusky Blue #475F94 ΔE 0.084
Use #644289 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.