#644299
Closest named color: Rebecca Purple (#663399). oklch(46.1% 0.137 298.9), rgb(100, 66, 153).
Aa
White text reads best on this color (7.55:1).
About this color
#644299 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.137 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.033 away. White text reads best on it, at 7.55:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.78:1 |
| White text | 7.55:1 |
Values
| HEX | #644299 |
| RGB | rgb(100, 66, 153) |
| HSL | hsl(263, 40%, 43%) |
| OKLCH | oklch(46.1% 0.137 298.9) |
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 #644299 | 7.55:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #644299 | 2.78:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #644299 text on white | 7.55:1 | AAA | Lc 85.9 | Fine for body text |
| #644299 text on black | 2.78:1 | Fails | Lc -16.1 | 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 700.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F5
oklch(93.5% 0.019 299.1)
-
Step 200
200
#DCD4EF
oklch(88.5% 0.038 299.2)
-
Step 300
300
#C6B8E6
oklch(80.9% 0.066 298.9)
-
Step 400
400
#AA92DA
oklch(70.8% 0.106 299)
-
Step 500
500
#9575D0
oklch(63.1% 0.136 298.7)
-
Step 600
600
#805CBD
oklch(55.7% 0.148 298.6)
-
Step 700
700 (this color)
#644299
oklch(46.1% 0.137 298.9)
-
Step 800
800
#583E84
oklch(42.7% 0.114 298.6)
-
Step 900
900
#48356A
oklch(37.6% 0.09 298.5)
-
Step 950
950
#2A203E
oklch(27.1% 0.055 298)
#644299 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) | #1C549C | 0.098 |
| Deuteranopia (no green cones) | #285397 | 0.090 |
| Tritanopia (no blue cones) | #595467 | 0.106 |
| Achromatopsia (no color) | #545454 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644299
#644299
oklch(46.1% 0.137 298.9)
- #526000
#526000
oklch(46.1% 0.108 119.1)
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 #644299, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.033
- Blueberry #464196 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.056
- Twilight #4E518B ΔE 0.058
- Bluey Purple #6241C7 ΔE 0.074
- Dusk #4E5481 ΔE 0.074
- Light Eggplant #894585 ΔE 0.080
- Blue With A Hint Of Purple #533CC6 ΔE 0.081
Use #644299 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.