#664896
Closest named color: Rebecca Purple (#663399). oklch(47.1% 0.124 299.4), rgb(102, 72, 150).
Aa
White text reads best on this color (7.16:1).
About this color
#664896 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.124 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 0.049 away. White text reads best on it, at 7.16:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #664896 |
| RGB | rgb(102, 72, 150) |
| HSL | hsl(263, 35%, 44%) |
| OKLCH | oklch(47.1% 0.124 299.4) |
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 #664896 | 7.16:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #664896 | 2.93:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #664896 text on white | 7.16:1 | AAA | Lc 84.6 | Fine for body text |
| #664896 text on black | 2.93:1 | Fails | Lc -17.4 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE7F4
oklch(93.5% 0.018 300.1)
-
Step 200
200
#DCD5ED
oklch(88.6% 0.033 299)
-
Step 300
300
#C6B9E3
oklch(81% 0.06 299.2)
-
Step 400
400
#A993D4
oklch(70.7% 0.096 299.5)
-
Step 500
500
#9477C9
oklch(63% 0.123 299.1)
-
Step 600
600
#7F5FB5
oklch(55.6% 0.132 299.2)
-
Step 700
700 (this color)
#664896
oklch(47.1% 0.124 299.4)
-
Step 800
800
#58407F
oklch(42.8% 0.103 299.6)
-
Step 900
900
#483766
oklch(37.8% 0.08 299.2)
-
Step 950
950
#2A203C
oklch(26.9% 0.052 299.3)
#664896 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) | #2D5799 | 0.084 |
| Deuteranopia (no green cones) | #355794 | 0.078 |
| Tritanopia (no blue cones) | #5C5768 | 0.096 |
| Achromatopsia (no color) | #585858 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664896
#664896
oklch(47.1% 0.124 299.4)
- #546300
#546300
oklch(47% 0.111 119.5)
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 #664896, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.049
- Twilight #4E518B ΔE 0.049
- Blueberry #464196 ΔE 0.059
- Dusk #4E5481 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.064
- Light Eggplant #894585 ΔE 0.070
- Dusky Blue #475F94 ΔE 0.074
- Denim Blue #3B5B92 ΔE 0.078
Use #664896 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.