#664BB0#664BB0

#664BB0 is a mid, vivid violet. Relative luminance 0.110; OKLCH L 49.4% C 0.154 H 292.1°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#664BB0
RGB	rgb(102, 75, 176)
HSL	hsl(256, 40%, 49%)
HSV	hsv(256, 57%, 69%)
CMYK	cmyk(42%, 57.4%, 0%, 31%)
CIE-LAB	lab(39.57, 35.59, -50.19)
CIE-LCH	lch(39.57, 61.53, 305.34°)
OKLab	oklab(49.39% 0.0581 -0.1428)
OKLCH	oklch(49.39% 0.154 292.1)
XYZ	xyz(15.8299, 10.9911, 42.3533)
Luminance	0.1099 (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

#664BB0 #95B04B

analogous

#4B62B0 #664BB0 #994BB0

triadic

#664BB0 #B0664B #4BB066

tetradic

#664BB0 #B04B62 #95B04B #4BB099

square

#664BB0 #B04B62 #95B04B #4BB099

split-complementary

#664BB0 #B0994B #62B04B

monochromatic

#34265A #4D3985 #664BB0 #8A74C4 #AE9FD6

Accessibility & contrast

On white

6.57

#664BB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#664BB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #664BB0

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664BB0	#FFFFFF	#000000	##FFFFFF
##664BB0	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#105FB3

Deuteranopia (green-blind)

#1A5BAE

Tritanopia (blue-blind)

#526176

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #664bb0;
/* rgb */ color: rgb(102, 75, 176);
/* oklch */ color: oklch(49.4% 0.154 292.1);

Tailwind

colors: {
  custom: {
    50: '#967ec8',
    500: '#664bb0',
    950: '#000000',
  },
}

SCSS

$custom: #664bb0;
$custom-light: #967ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#664bb0",
  "rgb": {
    "r": 102,
    "g": 75,
    "b": 176
  },
  "hsl": {
    "h": 256.04,
    "s": 40.239,
    "l": 49.216
  },
  "oklch": {
    "l": 0.49389,
    "c": 0.1542,
    "h": 292.1
  },
  "luminance": 0.10992
}

Semantic roles & 50–950 ramp

primary

#664BB0

secondary

#B6C394

accent

#D058B0

background

#F9F7FC

surface

#F2EEF8

border

#CCC9D1

text

#0E0A13

muted

#7E7C82

Preview Lab

Preview with #664BB0

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

Preview Lab → · Contrast checker → · Palette generator →