#664EA3#664EA3

#664EA3 is a mid, vivid violet. Relative luminance 0.109; OKLCH L 49.0% C 0.132 H 294.0°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#664EA3
RGB	rgb(102, 78, 163)
HSL	hsl(257, 35%, 47%)
HSV	hsv(257, 52%, 64%)
CMYK	cmyk(37.4%, 52.1%, 0%, 36.1%)
CIE-LAB	lab(39.44, 30.10, -42.67)
CIE-LCH	lch(39.44, 52.22, 305.20°)
OKLab	oklab(49.03% 0.0537 -0.1207)
OKLCH	oklch(49.03% 0.132 294)
XYZ	xyz(14.8130, 10.9176, 35.9701)
Luminance	0.1092 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664EA3 #8BA34E

analogous

#4E61A3 #664EA3 #914EA3

triadic

#664EA3 #A3664E #4EA366

tetradic

#664EA3 #A34E61 #8BA34E #4EA391

square

#664EA3 #A34E61 #8BA34E #4EA391

split-complementary

#664EA3 #A3914E #61A34E

monochromatic

#322650 #4C3A7A #664EA3 #8772BC #AA9CD0

Accessibility & contrast

On white

6.60

#664EA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#664EA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664EA3

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664EA3	#FFFFFF	#000000	##FFFFFF
##664EA3	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5EA6

Deuteranopia (green-blind)

#315BA1

Tritanopia (blue-blind)

#575F71

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #664ea3;
/* rgb */ color: rgb(102, 78, 163);
/* oklch */ color: oklch(49.0% 0.132 294.0);

Tailwind

colors: {
  custom: {
    50: '#9580bf',
    500: '#664ea3',
    950: '#000000',
  },
}

SCSS

$custom: #664ea3;
$custom-light: #9580bf;
$custom-dark: #000000;

JSON

{
  "hex": "#664ea3",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 163
  },
  "hsl": {
    "h": 256.941,
    "s": 35.27,
    "l": 47.255
  },
  "oklch": {
    "l": 0.49031,
    "c": 0.13217,
    "h": 294
  },
  "luminance": 0.10918
}

Semantic roles & 50–950 ramp

primary

#664EA3

secondary

#B0BC91

accent

#CB5CAC

background

#F9F7FB

surface

#F2EEF7

border

#CCC9D0

text

#0E0A12

muted

#7E7C81

Preview Lab

Preview with #664EA3

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

Preview Lab → · Contrast checker → · Palette generator →