#664EA4#664EA4

#664EA4 is a mid, vivid violet. Relative luminance 0.110; OKLCH L 49.1% C 0.134 H 293.8°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#664EA4
RGB	rgb(102, 78, 164)
HSL	hsl(257, 36%, 47%)
HSV	hsv(257, 52%, 64%)
CMYK	cmyk(37.8%, 52.4%, 0%, 35.7%)
CIE-LAB	lab(39.50, 30.38, -43.17)
CIE-LCH	lch(39.50, 52.79, 305.14°)
OKLab	oklab(49.1% 0.0538 -0.1222)
OKLCH	oklch(49.1% 0.134 293.8)
XYZ	xyz(14.9030, 10.9536, 36.4438)
Luminance	0.1095 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664EA4 #8CA44E

analogous

#4E61A4 #664EA4 #914EA4

triadic

#664EA4 #A4664E #4EA466

tetradic

#664EA4 #A44E61 #8CA44E #4EA491

square

#664EA4 #A44E61 #8CA44E #4EA491

split-complementary

#664EA4 #A4914E #61A44E

monochromatic

#322751 #4C3A7B #664EA4 #8773BC #AB9CD0

Accessibility & contrast

On white

6.58

#664EA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#664EA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664EA4

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664EA4	#FFFFFF	#000000	##FFFFFF
##664EA4	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5EA7

Deuteranopia (green-blind)

#305CA2

Tritanopia (blue-blind)

#575F71

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #664ea4;
/* rgb */ color: rgb(102, 78, 164);
/* oklch */ color: oklch(49.1% 0.134 293.8);

Tailwind

colors: {
  custom: {
    50: '#9580bf',
    500: '#664ea4',
    950: '#000000',
  },
}

SCSS

$custom: #664ea4;
$custom-light: #9580bf;
$custom-dark: #000000;

JSON

{
  "hex": "#664ea4",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 164
  },
  "hsl": {
    "h": 256.744,
    "s": 35.537,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49096,
    "c": 0.13353,
    "h": 293.8
  },
  "luminance": 0.10954
}

Semantic roles & 50–950 ramp

primary

#664EA4

secondary

#B1BD91

accent

#CC5CAD

background

#F9F7FB

surface

#F2EEF7

border

#CCC9D0

text

#0E0A12

muted

#7E7C81

Preview Lab

Preview with #664EA4

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

Preview Lab → · Contrast checker → · Palette generator →