#669CFB#669CFB

#669CFB is a light, vivid blue. Relative luminance 0.336; OKLCH L 69.8% C 0.152 H 261.0°. Best body text is #000000 at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#669CFB
RGB	rgb(102, 156, 251)
HSL	hsl(218, 95%, 69%)
HSV	hsv(218, 59%, 98%)
CMYK	cmyk(59.4%, 37.8%, 0%, 1.6%)
CIE-LAB	lab(64.61, 10.13, -52.72)
CIE-LCH	lch(64.61, 53.68, 280.88°)
OKLab	oklab(69.8% -0.0238 -0.1496)
OKLCH	oklch(69.8% 0.152 261)
XYZ	xyz(34.7745, 33.5637, 95.8940)
Luminance	0.3357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669CFB #FBC566

analogous

#66E7FB #669CFB #7B66FB

triadic

#669CFB #FB669C #9CFB66

tetradic

#669CFB #FB66E7 #FBC566 #66FB7B

square

#669CFB #FB66E7 #FBC566 #66FB7B

split-complementary

#669CFB #FB7B66 #E7FB66

monochromatic

#0655E1 #2A75F9 #669CFB #A2C3FD #DDE9FE

Accessibility & contrast

On white

2.72

#669CFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.71

#669CFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669CFB

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669CFB	#FFFFFF	#000000	##000000
##669CFB	1.00	2.72	7.71	7.71
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.71	21.00	1.00	1.00
##000000	7.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#73A4FF

Deuteranopia (green-blind)

#5F96F9

Tritanopia (blue-blind)

#00B1BF

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #669cfb;
/* rgb */ color: rgb(102, 156, 251);
/* oklch */ color: oklch(69.8% 0.152 261.0);

Tailwind

colors: {
  custom: {
    50: '#9db8fd',
    500: '#669cfb',
    950: '#000000',
  },
}

SCSS

$custom: #669cfb;
$custom-light: #9db8fd;
$custom-dark: #000000;

JSON

{
  "hex": "#669cfb",
  "rgb": {
    "r": 102,
    "g": 156,
    "b": 251
  },
  "hsl": {
    "h": 218.255,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.69803,
    "c": 0.15152,
    "h": 261
  },
  "luminance": 0.33567
}

Semantic roles & 50–950 ramp

primary

#669CFB

secondary

#F4E4C9

accent

#9200E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #669CFB

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

Preview Lab → · Contrast checker → · Palette generator →