#644497
Closest named color: Rebecca Purple (#663399). oklch(46.3% 0.132 299), rgb(100, 68, 151).
Aa
White text reads best on this color (7.45:1).
About this color
#644497 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.132 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 0.038 away. White text reads best on it, at 7.45:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #644497 |
| RGB | rgb(100, 68, 151) |
| HSL | hsl(263, 38%, 43%) |
| OKLCH | oklch(46.3% 0.132 299) |
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 #644497 | 7.45:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #644497 | 2.81:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #644497 text on white | 7.45:1 | AAA | Lc 85.7 | Fine for body text |
| #644497 text on black | 2.81:1 | Fails | Lc -16.4 | 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 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
#DCD4EE
oklch(88.4% 0.036 299.7)
-
Step 300
300
#C6B8E5
oklch(80.9% 0.064 299.2)
-
Step 400
400
#A992D8
oklch(70.7% 0.103 298.8)
-
Step 500
500
#9576CD
oklch(63.2% 0.13 299.1)
-
Step 600
600
#805DBA
oklch(55.7% 0.142 299.1)
-
Step 700
700 (this color)
#644497
oklch(46.3% 0.132 299)
-
Step 800
800
#583F82
oklch(42.8% 0.109 298.9)
-
Step 900
900
#483668
oklch(37.7% 0.085 298.9)
-
Step 950
950
#2A203D
oklch(27% 0.054 298.6)
#644497 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) | #23559A | 0.092 |
| Deuteranopia (no green cones) | #2D5495 | 0.084 |
| Tritanopia (no blue cones) | #595467 | 0.101 |
| Achromatopsia (no color) | #555555 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644497
#644497
oklch(46.3% 0.132 299)
- #536100
#536100
oklch(46.4% 0.109 119)
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 #644497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.038
- Blueberry #464196 ΔE 0.053
- Twilight #4E518B ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.057
- Dusk #4E5481 ΔE 0.069
- Light Eggplant #894585 ΔE 0.077
- Bluey Purple #6241C7 ΔE 0.077
- Dusky Blue #475F94 ΔE 0.081
Use #644497 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.