#664496
Closest named color: Rebecca Purple (#663399). oklch(46.4% 0.131 300.5), rgb(102, 68, 150).
Aa
White text reads best on this color (7.41:1).
About this color
#664496 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.131 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.039 away. White text reads best on it, at 7.41:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #664496 |
| RGB | rgb(102, 68, 150) |
| HSL | hsl(265, 38%, 43%) |
| OKLCH | oklch(46.4% 0.131 300.5) |
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 #664496 | 7.41:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #664496 | 2.83:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #664496 text on white | 7.41:1 | AAA | Lc 85.5 | Fine for body text |
| #664496 text on black | 2.83:1 | Fails | Lc -16.5 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DCD4ED
oklch(88.4% 0.035 300.3)
-
Step 300
300
#C7B8E4
oklch(80.9% 0.063 300.6)
-
Step 400
400
#AB92D6
oklch(70.7% 0.101 300.7)
-
Step 500
500
#9775CB
oklch(63.1% 0.13 301)
-
Step 600
600
#815DB8
oklch(55.6% 0.14 300.2)
-
Step 700
700 (this color)
#664496
oklch(46.4% 0.131 300.5)
-
Step 800
800
#593F80
oklch(42.7% 0.107 300.4)
-
Step 900
900
#493667
oklch(37.7% 0.084 300.3)
-
Step 950
950
#2B203C
oklch(27.1% 0.052 301.1)
#664496 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) | #255599 | 0.094 |
| Deuteranopia (no green cones) | #305594 | 0.086 |
| Tritanopia (no blue cones) | #5C5466 | 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°).
- #664496
#664496
oklch(46.4% 0.131 300.5)
- #516200
#516200
oklch(46.5% 0.111 120.7)
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 #664496, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.039
- Twilight #4E518B ΔE 0.055
- Blueberry #464196 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.060
- Dusk #4E5481 ΔE 0.070
- Light Eggplant #894585 ΔE 0.073
- Bluey Purple #6241C7 ΔE 0.079
- Dusky Blue #475F94 ΔE 0.082
Use #664496 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.