#668CC4#668CC4

#668CC4 is a light, moderate blue. Relative luminance 0.256; OKLCH L 63.5% C 0.095 H 257.9°. Best body text is #000000 at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#668CC4
RGB	rgb(102, 140, 196)
HSL	hsl(216, 44%, 58%)
HSV	hsv(216, 48%, 77%)
CMYK	cmyk(48%, 28.6%, 0%, 23.1%)
CIE-LAB	lab(57.62, 2.25, -33.15)
CIE-LCH	lch(57.62, 33.23, 273.88°)
OKLab	oklab(63.51% -0.0198 -0.0928)
OKLCH	oklch(63.51% 0.095 257.9)
XYZ	xyz(24.8181, 25.5648, 55.8406)
Luminance	0.2557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668CC4 #C49E66

analogous

#66BBC4 #668CC4 #6F66C4

triadic

#668CC4 #C4668C #8CC466

tetradic

#668CC4 #C466BB #C49E66 #66C46F

square

#668CC4 #C466BB #C49E66 #66C46F

split-complementary

#668CC4 #C46F66 #BBC466

monochromatic

#31507F #426CAB #668CC4 #92ADD5 #BECEE6

Accessibility & contrast

On white

3.44

#668CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.11

#668CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668CC4

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668CC4	#FFFFFF	#000000	##000000
##668CC4	1.00	3.44	6.11	6.11
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.11	21.00	1.00	1.00
##000000	6.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778FC6

Deuteranopia (green-blind)

#6C86C3

Tritanopia (blue-blind)

#3E98A0

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #668cc4;
/* rgb */ color: rgb(102, 140, 196);
/* oklch */ color: oklch(63.5% 0.095 257.9);

Tailwind

colors: {
  custom: {
    50: '#96add6',
    500: '#668cc4',
    950: '#000000',
  },
}

SCSS

$custom: #668cc4;
$custom-light: #96add6;
$custom-dark: #000000;

JSON

{
  "hex": "#668cc4",
  "rgb": {
    "r": 102,
    "g": 140,
    "b": 196
  },
  "hsl": {
    "h": 215.745,
    "s": 44.34,
    "l": 58.431
  },
  "oklch": {
    "l": 0.63506,
    "c": 0.09495,
    "h": 257.9
  },
  "luminance": 0.25566
}

Semantic roles & 50–950 ramp

primary

#668CC4

secondary

#D6C6B0

accent

#A054D4

background

#F9FAFD

surface

#F2F4FA

border

#CCCED3

text

#0E1014

muted

#7E7F83

Preview Lab

Preview with #668CC4

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

Preview Lab → · Contrast checker → · Palette generator →