#669CFF#669CFF

#669CFF is a light, vivid blue. Relative luminance 0.338; OKLCH L 70.0% C 0.157 H 261.6°. Best body text is #000000 at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#669CFF
RGB	rgb(102, 156, 255)
HSL	hsl(219, 100%, 70%)
HSV	hsv(219, 60%, 100%)
CMYK	cmyk(60%, 38.8%, 0%, 0%)
CIE-LAB	lab(64.82, 11.43, -54.58)
CIE-LCH	lch(64.82, 55.76, 281.83°)
OKLab	oklab(70.03% -0.0229 -0.1551)
OKLCH	oklch(70.03% 0.157 261.6)
XYZ	xyz(35.4117, 33.8186, 99.2499)
Luminance	0.3382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669CFF #FFC966

analogous

#66E8FF #669CFF #7D66FF

triadic

#669CFF #FF669C #9CFF66

tetradic

#669CFF #FF66E8 #FFC966 #66FF7D

square

#669CFF #FF66E8 #FFC966 #66FF7D

split-complementary

#669CFF #FF7D66 #E8FF66

monochromatic

#0053EB #2974FF #669CFF #A3C4FF #E0EBFF

Accessibility & contrast

On white

2.70

#669CFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.76

#669CFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669CFF

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669CFF	#FFFFFF	#000000	##000000
##669CFF	1.00	2.70	7.76	7.76
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.76	21.00	1.00	1.00
##000000	7.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#71A5FF

Deuteranopia (green-blind)

#5C97FD

Tritanopia (blue-blind)

#00B2C1

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #669cff;
/* rgb */ color: rgb(102, 156, 255);
/* oklch */ color: oklch(70.0% 0.157 261.6);

Tailwind

colors: {
  custom: {
    50: '#9db8ff',
    500: '#669cff',
    950: '#000000',
  },
}

SCSS

$custom: #669cff;
$custom-light: #9db8ff;
$custom-dark: #000000;

JSON

{
  "hex": "#669cff",
  "rgb": {
    "r": 102,
    "g": 156,
    "b": 255
  },
  "hsl": {
    "h": 218.824,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.70027,
    "c": 0.15677,
    "h": 261.6
  },
  "luminance": 0.33822
}

Semantic roles & 50–950 ramp

primary

#669CFF

secondary

#F6E7CB

accent

#9500E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #669CFF

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

Preview Lab → · Contrast checker → · Palette generator →