#664BB9#664BB9

#664BB9 is a mid, vivid violet. Relative luminance 0.114; OKLCH L 50.0% C 0.166 H 290.4°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#664BB9
RGB	rgb(102, 75, 185)
HSL	hsl(255, 44%, 51%)
HSV	hsv(255, 59%, 73%)
CMYK	cmyk(44.9%, 59.5%, 0%, 27.5%)
CIE-LAB	lab(40.18, 38.18, -54.50)
CIE-LCH	lch(40.18, 66.54, 305.01°)
OKLab	oklab(50.04% 0.0579 -0.1555)
OKLCH	oklch(50.04% 0.166 290.4)
XYZ	xyz(16.7501, 11.3591, 47.1995)
Luminance	0.1136 (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

#664BB9 #9EB94B

analogous

#4B67B9 #664BB9 #9D4BB9

triadic

#664BB9 #B9664B #4BB966

tetradic

#664BB9 #B94B67 #9EB94B #4BB99D

square

#664BB9 #B94B67 #9EB94B #4BB99D

split-complementary

#664BB9 #B99D4B #67B94B

monochromatic

#352763 #4D388F #664BB9 #8B77CA #B1A3DB

Accessibility & contrast

On white

6.42

#664BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#664BB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664BB9

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664BB9	#FFFFFF	#000000	##FFFFFF
##664BB9	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BD

Deuteranopia (green-blind)

#005CB7

Tritanopia (blue-blind)

#4D647B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #664bb9;
/* rgb */ color: rgb(102, 75, 185);
/* oklch */ color: oklch(50.0% 0.166 290.4);

Tailwind

colors: {
  custom: {
    50: '#977ecf',
    500: '#664bb9',
    950: '#000000',
  },
}

SCSS

$custom: #664bb9;
$custom-light: #977ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#664bb9",
  "rgb": {
    "r": 102,
    "g": 75,
    "b": 185
  },
  "hsl": {
    "h": 254.727,
    "s": 44,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50035,
    "c": 0.16596,
    "h": 290.4
  },
  "luminance": 0.1136
}

Semantic roles & 50–950 ramp

primary

#664BB9

secondary

#BCC898

accent

#D454B4

background

#F9F7FC

surface

#F2EEF9

border

#CCC9D2

text

#0E0A14

muted

#7E7C82

Preview Lab

Preview with #664BB9

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

Preview Lab → · Contrast checker → · Palette generator →