#668FF3#668FF3

#668FF3 is a light, vivid blue. Relative luminance 0.289; OKLCH L 66.7% C 0.155 H 265.6°. Best body text is #000000 at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#668FF3
RGB	rgb(102, 143, 243)
HSL	hsl(223, 85%, 68%)
HSV	hsv(223, 58%, 95%)
CMYK	cmyk(58%, 41.2%, 0%, 4.7%)
CIE-LAB	lab(60.73, 15.20, -54.50)
CIE-LCH	lch(60.73, 56.58, 285.58°)
OKLab	oklab(66.66% -0.012 -0.155)
OKLCH	oklch(66.66% 0.155 265.6)
XYZ	xyz(31.4741, 28.9382, 88.7037)
Luminance	0.2894 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668FF3 #F3CA66

analogous

#66D6F3 #668FF3 #8366F3

triadic

#668FF3 #F3668F #8FF366

tetradic

#668FF3 #F366D6 #F3CA66 #66F383

square

#668FF3 #F366D6 #F3CA66 #66F383

split-complementary

#668FF3 #F38366 #D6F366

monochromatic

#1048CE #2D65EF #668FF3 #9FB9F7 #D7E2FC

Accessibility & contrast

On white

3.09

#668FF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.79

#668FF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668FF3

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668FF3	#FFFFFF	#000000	##000000
##668FF3	1.00	3.09	6.79	6.79
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.79	21.00	1.00	1.00
##000000	6.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6399F7

Deuteranopia (green-blind)

#508DF1

Tritanopia (blue-blind)

#00A5B5

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #668ff3;
/* rgb */ color: rgb(102, 143, 243);
/* oklch */ color: oklch(66.7% 0.155 265.6);

Tailwind

colors: {
  custom: {
    50: '#9caff7',
    500: '#668ff3',
    950: '#000000',
  },
}

SCSS

$custom: #668ff3;
$custom-light: #9caff7;
$custom-dark: #000000;

JSON

{
  "hex": "#668ff3",
  "rgb": {
    "r": 102,
    "g": 143,
    "b": 243
  },
  "hsl": {
    "h": 222.553,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.66664,
    "c": 0.15547,
    "h": 265.6
  },
  "luminance": 0.28941
}

Semantic roles & 50–950 ramp

primary

#668FF3

secondary

#F0E4C5

accent

#A104E2

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #668FF3

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

Preview Lab → · Contrast checker → · Palette generator →