#664196
Closest named color: Rebecca Purple (#663399). oklch(45.9% 0.136 301.3), rgb(102, 65, 150).
Aa
White text reads best on this color (7.60:1).
About this color
#664196 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.136 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 0.032 away. White text reads best on it, at 7.60:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.76:1 |
| White text | 7.60:1 |
Values
| HEX | #664196 |
| RGB | rgb(102, 65, 150) |
| HSL | hsl(266, 40%, 42%) |
| OKLCH | oklch(45.9% 0.136 301.3) |
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 #664196 | 7.60:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #664196 | 2.76:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #664196 text on white | 7.60:1 | AAA | Lc 86.1 | Fine for body text |
| #664196 text on black | 2.76:1 | Fails | Lc -15.9 | 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
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DDD4EE
oklch(88.5% 0.037 301.4)
-
Step 300
300
#C8B7E5
oklch(80.9% 0.066 301.8)
-
Step 400
400
#AC91D8
oklch(70.7% 0.105 301.2)
-
Step 500
500
#9874CD
oklch(63.1% 0.134 301.3)
-
Step 600
600
#835BBA
oklch(55.6% 0.146 301.2)
-
Step 700
700 (this color)
#664196
oklch(45.9% 0.136 301.3)
-
Step 800
800
#5A3D82
oklch(42.6% 0.113 301.1)
-
Step 900
900
#4A3568
oklch(37.7% 0.087 301.3)
-
Step 950
950
#2B1F3D
oklch(26.9% 0.056 301.2)
#664196 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) | #1F5399 | 0.100 |
| Deuteranopia (no green cones) | #2C5394 | 0.091 |
| Tritanopia (no blue cones) | #5C5265 | 0.103 |
| Achromatopsia (no color) | #545454 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664196
#664196
oklch(45.9% 0.136 301.3)
- #4F6100
#4F6100
oklch(46.1% 0.111 121.4)
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 #664196, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Blueberry #464196 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.058
- Twilight #4E518B ΔE 0.059
- Dusk #4E5481 ΔE 0.075
- Light Eggplant #894585 ΔE 0.075
- Bluey Purple #6241C7 ΔE 0.079
- Blue With A Hint Of Purple #533CC6 ΔE 0.086
Use #664196 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.