#669CEF#669CEF

#669CEF is a light, vivid blue. Relative luminance 0.328; OKLCH L 69.2% C 0.136 H 258.7°. Best body text is #000000 at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#669CEF
RGB	rgb(102, 156, 239)
HSL	hsl(216, 81%, 67%)
HSV	hsv(216, 57%, 94%)
CMYK	cmyk(57.3%, 34.7%, 0%, 6.3%)
CIE-LAB	lab(64.02, 6.29, -47.08)
CIE-LCH	lch(64.02, 47.50, 277.61°)
OKLab	oklab(69.15% -0.0266 -0.1332)
OKLCH	oklch(69.15% 0.136 258.7)
XYZ	xyz(32.9425, 32.8309, 86.2456)
Luminance	0.3283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669CEF #EFB966

analogous

#66E1EF #669CEF #7566EF

triadic

#669CEF #EF669C #9CEF66

tetradic

#669CEF #EF66E1 #EFB966 #66EF75

square

#669CEF #EF66E1 #EFB966 #66EF75

split-complementary

#669CEF #EF7566 #E1EF66

monochromatic

#155BC6 #2F78E9 #669CEF #9DC0F5 #D5E4FB

Accessibility & contrast

On white

2.78

#669CEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.57

#669CEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669CEF

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669CEF	#FFFFFF	#000000	##000000
##669CEF	1.00	2.78	7.57	7.57
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.57	21.00	1.00	1.00
##000000	7.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7AA2F2

Deuteranopia (green-blind)

#6895ED

Tritanopia (blue-blind)

#00AFBA

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #669cef;
/* rgb */ color: rgb(102, 156, 239);
/* oklch */ color: oklch(69.2% 0.136 258.7);

Tailwind

colors: {
  custom: {
    50: '#9bb8f4',
    500: '#669cef',
    950: '#000000',
  },
}

SCSS

$custom: #669cef;
$custom-light: #9bb8f4;
$custom-dark: #000000;

JSON

{
  "hex": "#669cef",
  "rgb": {
    "r": 102,
    "g": 156,
    "b": 239
  },
  "hsl": {
    "h": 216.35,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.69151,
    "c": 0.13579,
    "h": 258.7
  },
  "luminance": 0.32834
}

Semantic roles & 50–950 ramp

primary

#669CEF

secondary

#EEDDC2

accent

#8908DD

background

#FAFBFE

surface

#F4F6FD

border

#CED0D5

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669CEF

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

Preview Lab → · Contrast checker → · Palette generator →