#668CF3#668CF3

#668CF3 is a light, vivid blue. Relative luminance 0.281; OKLCH L 66.1% C 0.159 H 266.8°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#668CF3
RGB	rgb(102, 140, 243)
HSL	hsl(224, 85%, 68%)
HSV	hsv(224, 58%, 95%)
CMYK	cmyk(58%, 42.4%, 0%, 4.7%)
CIE-LAB	lab(59.93, 16.98, -55.77)
CIE-LCH	lch(59.93, 58.30, 286.94°)
OKLab	oklab(66.05% -0.0088 -0.1587)
OKLCH	oklch(66.05% 0.159 266.8)
XYZ	xyz(31.0298, 28.0495, 88.5555)
Luminance	0.2805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668CF3 #F3CD66

analogous

#66D2F3 #668CF3 #8766F3

triadic

#668CF3 #F3668C #8CF366

tetradic

#668CF3 #F366D2 #F3CD66 #66F387

square

#668CF3 #F366D2 #F3CD66 #66F387

split-complementary

#668CF3 #F38766 #D2F366

monochromatic

#1043CE #2D61EF #668CF3 #9FB7F7 #D7E1FC

Accessibility & contrast

On white

3.18

#668CF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#668CF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668CF3

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668CF3	#FFFFFF	#000000	##000000
##668CF3	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E97F7

Deuteranopia (green-blind)

#4B8AF1

Tritanopia (blue-blind)

#00A3B4

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #668cf3;
/* rgb */ color: rgb(102, 140, 243);
/* oklch */ color: oklch(66.1% 0.159 266.8);

Tailwind

colors: {
  custom: {
    50: '#9cadf7',
    500: '#668cf3',
    950: '#000000',
  },
}

SCSS

$custom: #668cf3;
$custom-light: #9cadf7;
$custom-dark: #000000;

JSON

{
  "hex": "#668cf3",
  "rgb": {
    "r": 102,
    "g": 140,
    "b": 243
  },
  "hsl": {
    "h": 223.83,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.66053,
    "c": 0.159,
    "h": 266.8
  },
  "luminance": 0.28052
}

Semantic roles & 50–950 ramp

primary

#668CF3

secondary

#F0E4C5

accent

#A604E2

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #668CF3

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

Preview Lab → · Contrast checker → · Palette generator →