#664BB7#664BB7

#664BB7 is a mid, vivid violet. Relative luminance 0.113; OKLCH L 49.9% C 0.163 H 290.8°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#664BB7
RGB	rgb(102, 75, 183)
HSL	hsl(255, 43%, 51%)
HSV	hsv(255, 59%, 72%)
CMYK	cmyk(44.3%, 59%, 0%, 28.2%)
CIE-LAB	lab(40.04, 37.60, -53.55)
CIE-LCH	lch(40.04, 65.43, 305.07°)
OKLab	oklab(49.89% 0.058 -0.1527)
OKLCH	oklch(49.89% 0.163 290.8)
XYZ	xyz(16.5404, 11.2753, 46.0954)
Luminance	0.1128 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664BB7 #9CB74B

analogous

#4B66B7 #664BB7 #9C4BB7

triadic

#664BB7 #B7664B #4BB766

tetradic

#664BB7 #B74B66 #9CB74B #4BB79C

square

#664BB7 #B74B66 #9CB74B #4BB79C

split-complementary

#664BB7 #B79C4B #66B74B

monochromatic

#352761 #4D388D #664BB7 #8B77C8 #B0A2DA

Accessibility & contrast

On white

6.45

#664BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#664BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664BB7

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664BB7	#FFFFFF	#000000	##FFFFFF
##664BB7	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BB

Deuteranopia (green-blind)

#055CB5

Tritanopia (blue-blind)

#4E637A

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #664bb7;
/* rgb */ color: rgb(102, 75, 183);
/* oklch */ color: oklch(49.9% 0.163 290.8);

Tailwind

colors: {
  custom: {
    50: '#977ecd',
    500: '#664bb7',
    950: '#000000',
  },
}

SCSS

$custom: #664bb7;
$custom-light: #977ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#664bb7",
  "rgb": {
    "r": 102,
    "g": 75,
    "b": 183
  },
  "hsl": {
    "h": 255,
    "s": 42.857,
    "l": 50.588
  },
  "oklch": {
    "l": 0.4989,
    "c": 0.16337,
    "h": 290.8
  },
  "luminance": 0.11276
}

Semantic roles & 50–950 ramp

primary

#664BB7

secondary

#BBC797

accent

#D355B3

background

#F9F7FC

surface

#F2EEF9

border

#CCC9D2

text

#0E0A14

muted

#7E7C82

Preview Lab

Preview with #664BB7

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →