#668FF4#668FF4

#668FF4 is a light, vivid blue. Relative luminance 0.290; OKLCH L 66.7% C 0.157 H 265.7°. Best body text is #000000 at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#668FF4
RGB	rgb(102, 143, 244)
HSL	hsl(223, 87%, 68%)
HSV	hsv(223, 58%, 96%)
CMYK	cmyk(58.2%, 41.4%, 0%, 4.3%)
CIE-LAB	lab(60.78, 15.52, -54.97)
CIE-LCH	lch(60.78, 57.12, 285.77°)
OKLab	oklab(66.72% -0.0118 -0.1564)
OKLCH	oklch(66.72% 0.157 265.7)
XYZ	xyz(31.6255, 28.9987, 89.5011)
Luminance	0.2900 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668FF4 #F4CB66

analogous

#66D6F4 #668FF4 #8466F4

triadic

#668FF4 #F4668F #8FF466

tetradic

#668FF4 #F466D6 #F4CB66 #66F484

square

#668FF4 #F466D6 #F4CB66 #66F484

split-complementary

#668FF4 #F48466 #D6F466

monochromatic

#0F47D1 #2D65F0 #668FF4 #9FB9F8 #D8E3FC

Accessibility & contrast

On white

3.09

#668FF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.80

#668FF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668FF4

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668FF4	#FFFFFF	#000000	##000000
##668FF4	1.00	3.09	6.80	6.80
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.80	21.00	1.00	1.00
##000000	6.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#639AF8

Deuteranopia (green-blind)

#4F8DF2

Tritanopia (blue-blind)

#00A5B6

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #668ff4;
/* rgb */ color: rgb(102, 143, 244);
/* oklch */ color: oklch(66.7% 0.157 265.7);

Tailwind

colors: {
  custom: {
    50: '#9caff8',
    500: '#668ff4',
    950: '#000000',
  },
}

SCSS

$custom: #668ff4;
$custom-light: #9caff8;
$custom-dark: #000000;

JSON

{
  "hex": "#668ff4",
  "rgb": {
    "r": 102,
    "g": 143,
    "b": 244
  },
  "hsl": {
    "h": 222.676,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.66722,
    "c": 0.15682,
    "h": 265.7
  },
  "luminance": 0.29001
}

Semantic roles & 50–950 ramp

primary

#668FF4

secondary

#F1E4C5

accent

#A202E3

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #668FF4

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

Preview Lab → · Contrast checker → · Palette generator →