#668CC5#668CC5

#668CC5 is a light, moderate blue. Relative luminance 0.256; OKLCH L 63.6% C 0.096 H 258.3°. Best body text is #000000 at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#668CC5
RGB	rgb(102, 140, 197)
HSL	hsl(216, 45%, 59%)
HSV	hsv(216, 48%, 77%)
CMYK	cmyk(48.2%, 28.9%, 0%, 22.7%)
CIE-LAB	lab(57.67, 2.55, -33.65)
CIE-LCH	lch(57.67, 33.75, 274.33°)
OKLab	oklab(63.55% -0.0195 -0.0943)
OKLCH	oklch(63.55% 0.096 258.3)
XYZ	xyz(24.9323, 25.6105, 56.4420)
Luminance	0.2561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668CC5 #C59F66

analogous

#66BBC5 #668CC5 #6F66C5

triadic

#668CC5 #C5668C #8CC566

tetradic

#668CC5 #C566BB #C59F66 #66C56F

square

#668CC5 #C566BB #C59F66 #66C56F

split-complementary

#668CC5 #C56F66 #BBC566

monochromatic

#315080 #416CAC #668CC5 #92ADD6 #BFCFE7

Accessibility & contrast

On white

3.43

#668CC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.12

#668CC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668CC5

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668CC5	#FFFFFF	#000000	##000000
##668CC5	1.00	3.43	6.12	6.12
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.12	21.00	1.00	1.00
##000000	6.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7690C7

Deuteranopia (green-blind)

#6B86C4

Tritanopia (blue-blind)

#3D98A0

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #668cc5;
/* rgb */ color: rgb(102, 140, 197);
/* oklch */ color: oklch(63.6% 0.096 258.3);

Tailwind

colors: {
  custom: {
    50: '#96add7',
    500: '#668cc5',
    950: '#000000',
  },
}

SCSS

$custom: #668cc5;
$custom-light: #96add7;
$custom-dark: #000000;

JSON

{
  "hex": "#668cc5",
  "rgb": {
    "r": 102,
    "g": 140,
    "b": 197
  },
  "hsl": {
    "h": 216,
    "s": 45.024,
    "l": 58.627
  },
  "oklch": {
    "l": 0.63555,
    "c": 0.09629,
    "h": 258.3
  },
  "luminance": 0.25612
}

Semantic roles & 50–950 ramp

primary

#668CC5

secondary

#D6C7B1

accent

#A153D5

background

#F9FAFD

surface

#F2F4FA

border

#CCCED3

text

#0E1014

muted

#7E7F83

Preview Lab

Preview with #668CC5

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

Preview Lab → · Contrast checker → · Palette generator →