#669DEF#669DEF

#669DEF is a light, vivid blue. Relative luminance 0.332; OKLCH L 69.4% C 0.135 H 258.2°. Best body text is #000000 at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#669DEF
RGB	rgb(102, 157, 239)
HSL	hsl(216, 81%, 67%)
HSV	hsv(216, 57%, 94%)
CMYK	cmyk(57.3%, 34.3%, 0%, 6.3%)
CIE-LAB	lab(64.30, 5.71, -46.65)
CIE-LCH	lch(64.30, 47.00, 276.98°)
OKLab	oklab(69.36% -0.0276 -0.1319)
OKLCH	oklch(69.36% 0.135 258.2)
XYZ	xyz(33.1110, 33.1679, 86.3018)
Luminance	0.3317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669DEF #EFB866

analogous

#66E2EF #669DEF #7466EF

triadic

#669DEF #EF669D #9DEF66

tetradic

#669DEF #EF66E2 #EFB866 #66EF74

square

#669DEF #EF66E2 #EFB866 #66EF74

split-complementary

#669DEF #EF7466 #E2EF66

monochromatic

#155CC6 #2F7AE9 #669DEF #9DC0F5 #D5E4FB

Accessibility & contrast

On white

2.75

#669DEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.63

#669DEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669DEF

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669DEF	#FFFFFF	#000000	##000000
##669DEF	1.00	2.75	7.63	7.63
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.63	21.00	1.00	1.00
##000000	7.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7BA3F2

Deuteranopia (green-blind)

#6996ED

Tritanopia (blue-blind)

#00AFBB

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #669def;
/* rgb */ color: rgb(102, 157, 239);
/* oklch */ color: oklch(69.4% 0.135 258.2);

Tailwind

colors: {
  custom: {
    50: '#9bb9f4',
    500: '#669def',
    950: '#000000',
  },
}

SCSS

$custom: #669def;
$custom-light: #9bb9f4;
$custom-dark: #000000;

JSON

{
  "hex": "#669def",
  "rgb": {
    "r": 102,
    "g": 157,
    "b": 239
  },
  "hsl": {
    "h": 215.912,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.69363,
    "c": 0.13476,
    "h": 258.2
  },
  "luminance": 0.33171
}

Semantic roles & 50–950 ramp

primary

#669DEF

secondary

#EEDDC2

accent

#8808DD

background

#FAFBFE

surface

#F4F6FD

border

#CED0D5

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669DEF

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

Preview Lab → · Contrast checker → · Palette generator →