#668BC5#668BC5

#668BC5 is a light, moderate blue. Relative luminance 0.253; OKLCH L 63.3% C 0.097 H 259.1°. Best body text is #000000 at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#668BC5
RGB	rgb(102, 139, 197)
HSL	hsl(217, 45%, 59%)
HSV	hsv(217, 48%, 77%)
CMYK	cmyk(48.2%, 29.4%, 0%, 22.7%)
CIE-LAB	lab(57.39, 3.13, -34.09)
CIE-LCH	lch(57.39, 34.23, 275.24°)
OKLab	oklab(63.34% -0.0183 -0.0955)
OKLCH	oklch(63.34% 0.097 259.1)
XYZ	xyz(24.7868, 25.3196, 56.3935)
Luminance	0.2532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668BC5 #C5A066

analogous

#66BAC5 #668BC5 #7066C5

triadic

#668BC5 #C5668B #8BC566

tetradic

#668BC5 #C566BA #C5A066 #66C570

square

#668BC5 #C566BA #C5A066 #66C570

split-complementary

#668BC5 #C57066 #BAC566

monochromatic

#315080 #416BAC #668BC5 #92ADD6 #BFCEE7

Accessibility & contrast

On white

3.46

#668BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.06

#668BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668BC5

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668BC5	#FFFFFF	#000000	##000000
##668BC5	1.00	3.46	6.06	6.06
#FFFFFF	3.46	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)

#758FC8

Deuteranopia (green-blind)

#6A86C4

Tritanopia (blue-blind)

#3D989F

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #668bc5;
/* rgb */ color: rgb(102, 139, 197);
/* oklch */ color: oklch(63.3% 0.097 259.1);

Tailwind

colors: {
  custom: {
    50: '#96acd7',
    500: '#668bc5',
    950: '#000000',
  },
}

SCSS

$custom: #668bc5;
$custom-light: #96acd7;
$custom-dark: #000000;

JSON

{
  "hex": "#668bc5",
  "rgb": {
    "r": 102,
    "g": 139,
    "b": 197
  },
  "hsl": {
    "h": 216.632,
    "s": 45.024,
    "l": 58.627
  },
  "oklch": {
    "l": 0.63336,
    "c": 0.09729,
    "h": 259.1
  },
  "luminance": 0.25321
}

Semantic roles & 50–950 ramp

primary

#668BC5

secondary

#D6C8B1

accent

#A253D5

background

#F9FAFD

surface

#F2F4FA

border

#CCCED3

text

#0E1014

muted

#7E7F83

Preview Lab

Preview with #668BC5

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

Preview Lab → · Contrast checker → · Palette generator →