#668BC4#668BC4

#668BC4 is a light, moderate blue. Relative luminance 0.253; OKLCH L 63.3% C 0.096 H 258.8°. Best body text is #000000 at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#668BC4
RGB	rgb(102, 139, 196)
HSL	hsl(216, 44%, 58%)
HSV	hsv(216, 48%, 77%)
CMYK	cmyk(48%, 29.1%, 0%, 23.1%)
CIE-LAB	lab(57.34, 2.83, -33.59)
CIE-LCH	lch(57.34, 33.71, 274.81°)
OKLab	oklab(63.29% -0.0186 -0.0941)
OKLCH	oklch(63.29% 0.096 258.8)
XYZ	xyz(24.6726, 25.2739, 55.7921)
Luminance	0.2528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668BC4 #C49F66

analogous

#66BAC4 #668BC4 #7066C4

triadic

#668BC4 #C4668B #8BC466

tetradic

#668BC4 #C466BA #C49F66 #66C470

square

#668BC4 #C466BA #C49F66 #66C470

split-complementary

#668BC4 #C47066 #BAC466

monochromatic

#31507F #426BAB #668BC4 #92ACD5 #BECEE6

Accessibility & contrast

On white

3.47

#668BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.06

#668BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668BC4

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668BC4	#FFFFFF	#000000	##000000
##668BC4	1.00	3.47	6.06	6.06
#FFFFFF	3.47	1.00	21.00	21.00
#000000	6.06	21.00	1.00	1.00
##000000	6.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758FC6

Deuteranopia (green-blind)

#6A86C3

Tritanopia (blue-blind)

#3E979F

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #668bc4;
/* rgb */ color: rgb(102, 139, 196);
/* oklch */ color: oklch(63.3% 0.096 258.8);

Tailwind

colors: {
  custom: {
    50: '#96acd6',
    500: '#668bc4',
    950: '#000000',
  },
}

SCSS

$custom: #668bc4;
$custom-light: #96acd6;
$custom-dark: #000000;

JSON

{
  "hex": "#668bc4",
  "rgb": {
    "r": 102,
    "g": 139,
    "b": 196
  },
  "hsl": {
    "h": 216.383,
    "s": 44.34,
    "l": 58.431
  },
  "oklch": {
    "l": 0.63287,
    "c": 0.09593,
    "h": 258.8
  },
  "luminance": 0.25276
}

Semantic roles & 50–950 ramp

primary

#668BC4

secondary

#D6C7B0

accent

#A254D4

background

#F9FAFD

surface

#F2F4FA

border

#CCCED3

text

#0E1014

muted

#7E7F83

Preview Lab

Preview with #668BC4

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

Preview Lab → · Contrast checker → · Palette generator →