#66B6EB#66B6EB

#66B6EB is a light, moderate cyan. Relative luminance 0.423; OKLCH L 74.6% C 0.110 H 239.5°. Best body text is #000000 at 9.46:1 contrast (WCAG AA passes).

Color values

HEX#66B6EB
RGBrgb(102, 182, 235)
HSLhsl(204, 77%, 66%)
HSVhsv(204, 57%, 92%)
CMYKcmyk(56.6%, 22.6%, 0%, 7.8%)
CIE-LABlab(71.06, -9.53, -33.89)
CIE-LCHlch(71.06, 35.21, 254.29°)
OKLaboklab(74.62% -0.0558 -0.0948)
OKLCHoklch(74.62% 0.11 239.5)
XYZxyz(37.1973, 42.2755, 84.7809)
Luminance0.4228 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B6EB #EB9B66
analogous
#66EBDE #66B6EB #6673EB
triadic
#66B6EB #EB66B6 #B6EB66
tetradic
#66B6EB #DE66EB #EB9B66 #73EB66
square
#66B6EB #DE66EB #EB9B66 #73EB66
split-complementary
#66B6EB #EB6673 #EBDE66
monochromatic
#197CBE #309CE4 #66B6EB #9CD0F2 #D2EAF9

Accessibility & contrast

On white

2.22
#66B6EB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.46
#66B6EB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B6EB
9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B6EB#FFFFFF#000000##000000
##66B6EB1.002.229.469.46
#FFFFFF2.221.0021.0021.00
#0000009.4621.001.001.00
##0000009.4621.001.001.00

Color blindness preview

Protanopia (red-blind)
#9EB6EE
Deuteranopia (green-blind)
#8CA8EA
Tritanopia (blue-blind)
#00C3C8
Achromatopsia (no color)
#AEAEAE

Design tokens & code

CSS
--color: #66b6eb;
/* rgb */ color: rgb(102, 182, 235);
/* oklch */ color: oklch(74.6% 0.110 239.5);
Tailwind
colors: {
  custom: {
    50: '#9bcbf1',
    500: '#66b6eb',
    950: '#000000',
  },
}
SCSS
$custom: #66b6eb;
$custom-light: #9bcbf1;
$custom-dark: #000000;
JSON
{
  "hex": "#66b6eb",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 235
  },
  "hsl": {
    "h": 203.91,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.74622,
    "c": 0.11001,
    "h": 239.5
  },
  "luminance": 0.42279
}

Semantic roles & 50–950 ramp

primary
#66B6EB
secondary
#ECD2C1
accent
#5E0CD9
background
#FAFCFE
surface
#F3F8FD
border
#CDD1D5
text
#0F1316
muted
#7F8284

Preview Lab

Preview with #66B6EB

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

Preview Lab → · Contrast checker → · Palette generator →

#66B6EB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva