#668CEE#668CEE

#668CEE is a light, vivid blue. Relative luminance 0.278; OKLCH L 65.8% C 0.152 H 266.3°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#668CEE
RGB	rgb(102, 140, 238)
HSL	hsl(223, 80%, 67%)
HSV	hsv(223, 57%, 93%)
CMYK	cmyk(57.1%, 41.2%, 0%, 6.7%)
CIE-LAB	lab(59.66, 15.37, -53.43)
CIE-LCH	lch(59.66, 55.60, 286.05°)
OKLab	oklab(65.76% -0.0097 -0.1519)
OKLCH	oklch(65.76% 0.152 266.3)
XYZ	xyz(30.2850, 27.7516, 84.6330)
Luminance	0.2775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668CEE #EEC866

analogous

#66D0EE #668CEE #8466EE

triadic

#668CEE #EE668C #8CEE66

tetradic

#668CEE #EE66D0 #EEC866 #66EE84

square

#668CEE #EE66D0 #EEC866 #66EE84

split-complementary

#668CEE #EE8466 #D0EE66

monochromatic

#1646C4 #2F63E8 #668CEE #9DB5F4 #D4DFFA

Accessibility & contrast

On white

3.21

#668CEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#668CEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668CEE

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668CEE	#FFFFFF	#000000	##000000
##668CEE	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6296F2

Deuteranopia (green-blind)

#508AEC

Tritanopia (blue-blind)

#00A2B1

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #668cee;
/* rgb */ color: rgb(102, 140, 238);
/* oklch */ color: oklch(65.8% 0.152 266.3);

Tailwind

colors: {
  custom: {
    50: '#9badf4',
    500: '#668cee',
    950: '#000000',
  },
}

SCSS

$custom: #668cee;
$custom-light: #9badf4;
$custom-dark: #000000;

JSON

{
  "hex": "#668cee",
  "rgb": {
    "r": 102,
    "g": 140,
    "b": 238
  },
  "hsl": {
    "h": 223.235,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.65758,
    "c": 0.15222,
    "h": 266.3
  },
  "luminance": 0.27754
}

Semantic roles & 50–950 ramp

primary

#668CEE

secondary

#EEE2C2

accent

#A109DC

background

#FAFAFE

surface

#F4F4FD

border

#CECED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #668CEE

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

Preview Lab → · Contrast checker → · Palette generator →