#66BEF5#66BEF5

#66BEF5 is a light, moderate cyan. Relative luminance 0.462; OKLCH L 76.8% C 0.116 H 238.2°. Best body text is #000000 at 10.25:1 contrast (WCAG AA passes).

Color values

HEX#66BEF5
RGBrgb(102, 190, 245)
HSLhsl(203, 88%, 68%)
HSVhsv(203, 58%, 96%)
CMYKcmyk(58.4%, 22.4%, 0%, 3.9%)
CIE-LABlab(73.70, -10.80, -35.22)
CIE-LCHlch(73.70, 36.84, 252.95°)
OKLaboklab(76.85% -0.061 -0.0986)
OKLCHoklch(76.85% 0.116 238.2)
XYZxyz(40.3682, 46.2405, 93.1664)
Luminance0.4624 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66BEF5 #F59D66
analogous
#66F5E4 #66BEF5 #6676F5
triadic
#66BEF5 #F566BE #BEF566
tetradic
#66BEF5 #E466F5 #F59D66 #76F566
square
#66BEF5 #E466F5 #F59D66 #76F566
split-complementary
#66BEF5 #F56676 #F5E466
monochromatic
#0E87D3 #2DA6F1 #66BEF5 #9FD6F9 #D9EFFD

Accessibility & contrast

On white

2.05
#66BEF5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.25
#66BEF5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEF5
10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66BEF5#FFFFFF#000000##000000
##66BEF51.002.0510.2510.25
#FFFFFF2.051.0021.0021.00
#00000010.2521.001.001.00
##00000010.2521.001.001.00

Color blindness preview

Protanopia (red-blind)
#A5BDF8
Deuteranopia (green-blind)
#91AFF4
Tritanopia (blue-blind)
#00CCD0
Achromatopsia (no color)
#B5B5B5

Design tokens & code

CSS
--color: #66bef5;
/* rgb */ color: rgb(102, 190, 245);
/* oklch */ color: oklch(76.8% 0.116 238.2);
Tailwind
colors: {
  custom: {
    50: '#9cd1f8',
    500: '#66bef5',
    950: '#000000',
  },
}
SCSS
$custom: #66bef5;
$custom-light: #9cd1f8;
$custom-dark: #000000;
JSON
{
  "hex": "#66bef5",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 245
  },
  "hsl": {
    "h": 203.077,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.76845,
    "c": 0.11595,
    "h": 238.2
  },
  "luminance": 0.46244
}

Semantic roles & 50–950 ramp

primary
#66BEF5
secondary
#F1D6C6
accent
#5901E4
background
#FAFCFF
surface
#F4F9FF
border
#CED2D7
text
#0F1417
muted
#7F8285

Preview Lab

Preview with #66BEF5

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

Preview Lab → · Contrast checker → · Palette generator →

#66BEF5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva