#669CF3#669CF3

#669CF3 is a light, vivid blue. Relative luminance 0.331; OKLCH L 69.4% C 0.141 H 259.5°. Best body text is #000000 at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#669CF3
RGB	rgb(102, 156, 243)
HSL	hsl(217, 85%, 68%)
HSV	hsv(217, 58%, 95%)
CMYK	cmyk(58%, 35.8%, 0%, 4.7%)
CIE-LAB	lab(64.22, 7.56, -48.97)
CIE-LCH	lch(64.22, 49.55, 278.78°)
OKLab	oklab(69.36% -0.0256 -0.1387)
OKLCH	oklch(69.36% 0.141 259.5)
XYZ	xyz(33.5400, 33.0699, 89.3923)
Luminance	0.3307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669CF3 #F3BD66

analogous

#66E3F3 #669CF3 #7666F3

triadic

#669CF3 #F3669C #9CF366

tetradic

#669CF3 #F366E3 #F3BD66 #66F376

square

#669CF3 #F366E3 #F3BD66 #66F376

split-complementary

#669CF3 #F37666 #E3F366

monochromatic

#1059CE #2D77EF #669CF3 #9FC1F7 #D7E5FC

Accessibility & contrast

On white

2.76

#669CF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.61

#669CF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669CF3

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669CF3	#FFFFFF	#000000	##000000
##669CF3	1.00	2.76	7.61	7.61
#FFFFFF	2.76	1.00	21.00	21.00
#000000	7.61	21.00	1.00	1.00
##000000	7.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#78A3F7

Deuteranopia (green-blind)

#6596F1

Tritanopia (blue-blind)

#00AFBC

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #669cf3;
/* rgb */ color: rgb(102, 156, 243);
/* oklch */ color: oklch(69.4% 0.141 259.5);

Tailwind

colors: {
  custom: {
    50: '#9cb8f7',
    500: '#669cf3',
    950: '#000000',
  },
}

SCSS

$custom: #669cf3;
$custom-light: #9cb8f7;
$custom-dark: #000000;

JSON

{
  "hex": "#669cf3",
  "rgb": {
    "r": 102,
    "g": 156,
    "b": 243
  },
  "hsl": {
    "h": 217.021,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.69365,
    "c": 0.14102,
    "h": 259.5
  },
  "luminance": 0.33073
}

Semantic roles & 50–950 ramp

primary

#669CF3

secondary

#F0E0C5

accent

#8D04E2

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669CF3

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

Preview Lab → · Contrast checker → · Palette generator →