#669FF8#669FF8

#669FF8 is a light, vivid blue. Relative luminance 0.344; OKLCH L 70.3% C 0.144 H 259.0°. Best body text is #000000 at 7.88:1 contrast (WCAG AA passes).

Color values

HEX#669FF8
RGBrgb(102, 159, 248)
HSLhsl(217, 91%, 69%)
HSVhsv(217, 59%, 97%)
CMYKcmyk(58.9%, 35.9%, 0%, 2.7%)
CIE-LABlab(65.28, 7.43, -50.03)
CIE-LCHlch(65.28, 50.58, 278.44°)
OKLaboklab(70.27% -0.0276 -0.1418)
OKLCHoklch(70.27% 0.144 259)
XYZxyz(34.8150, 34.3953, 93.5930)
Luminance0.3440 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#669FF8 #F8BF66
analogous
#66E8F8 #669FF8 #7666F8
triadic
#669FF8 #F8669F #9FF866
tetradic
#669FF8 #F866E8 #F8BF66 #66F876
square
#669FF8 #F866E8 #F8BF66 #66F876
split-complementary
#669FF8 #F87666 #E8F866
monochromatic
#0A5BDA #2B7AF5 #669FF8 #A1C4FB #DBE8FD

Accessibility & contrast

On white

2.67
#669FF8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.88
#669FF8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669FF8
7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##669FF8#FFFFFF#000000##000000
##669FF81.002.677.887.88
#FFFFFF2.671.0021.0021.00
#0000007.8821.001.001.00
##0000007.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#79A6FC
Deuteranopia (green-blind)
#6698F6
Tritanopia (blue-blind)
#00B3C0
Achromatopsia (no color)
#9E9E9E

Design tokens & code

CSS
--color: #669ff8;
/* rgb */ color: rgb(102, 159, 248);
/* oklch */ color: oklch(70.3% 0.144 259.0);
Tailwind
colors: {
  custom: {
    50: '#9cbbfb',
    500: '#669ff8',
    950: '#000000',
  },
}
SCSS
$custom: #669ff8;
$custom-light: #9cbbfb;
$custom-dark: #000000;
JSON
{
  "hex": "#669ff8",
  "rgb": {
    "r": 102,
    "g": 159,
    "b": 248
  },
  "hsl": {
    "h": 216.575,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.70267,
    "c": 0.14441,
    "h": 259
  },
  "luminance": 0.34398
}

Semantic roles & 50–950 ramp

primary
#669FF8
secondary
#F3E2C7
accent
#8C00E6
background
#FAFBFF
surface
#F4F6FF
border
#CED0D7
text
#0F1117
muted
#7F8085

Preview Lab

Preview with #669FF8

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

Preview Lab → · Contrast checker → · Palette generator →

#669FF8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva