#668FFB#668FFB

#668FFB is a light, vivid blue. Relative luminance 0.294; OKLCH L 67.1% C 0.166 H 266.4°. Best body text is #000000 at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#668FFB
RGB	rgb(102, 143, 251)
HSL	hsl(223, 95%, 69%)
HSV	hsv(223, 59%, 98%)
CMYK	cmyk(59.4%, 43%, 0%, 1.6%)
CIE-LAB	lab(61.16, 17.79, -58.21)
CIE-LCH	lch(61.16, 60.87, 287.00°)
OKLab	oklab(67.14% -0.0105 -0.1659)
OKLCH	oklch(67.14% 0.166 266.4)
XYZ	xyz(32.7086, 29.4320, 95.2053)
Luminance	0.2944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668FFB #FBD266

analogous

#66DAFB #668FFB #8866FB

triadic

#668FFB #FB668F #8FFB66

tetradic

#668FFB #FB66DA #FBD266 #66FB88

square

#668FFB #FB66DA #FBD266 #66FB88

split-complementary

#668FFB #FB8866 #DAFB66

monochromatic

#0642E1 #2A63F9 #668FFB #A2BBFD #DDE6FE

Accessibility & contrast

On white

3.05

#668FFB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.89

#668FFB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668FFB

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668FFB	#FFFFFF	#000000	##000000
##668FFB	1.00	3.05	6.89	6.89
#FFFFFF	3.05	1.00	21.00	21.00
#000000	6.89	21.00	1.00	1.00
##000000	6.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E9BFF

Deuteranopia (green-blind)

#488DF9

Tritanopia (blue-blind)

#00A7B9

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #668ffb;
/* rgb */ color: rgb(102, 143, 251);
/* oklch */ color: oklch(67.1% 0.166 266.4);

Tailwind

colors: {
  custom: {
    50: '#9daffd',
    500: '#668ffb',
    950: '#000000',
  },
}

SCSS

$custom: #668ffb;
$custom-light: #9daffd;
$custom-dark: #000000;

JSON

{
  "hex": "#668ffb",
  "rgb": {
    "r": 102,
    "g": 143,
    "b": 251
  },
  "hsl": {
    "h": 223.49,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.67138,
    "c": 0.16623,
    "h": 266.4
  },
  "luminance": 0.29435
}

Semantic roles & 50–950 ramp

primary

#668FFB

secondary

#F4E8C9

accent

#A600E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1018

muted

#7F7F86

Preview Lab

Preview with #668FFB

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

Preview Lab → · Contrast checker → · Palette generator →