#66B2F0#66B2F0

#66B2F0 is a light, moderate cyan. Relative luminance 0.410; OKLCH L 74.0% C 0.118 H 245.0°. Best body text is #000000 at 9.19:1 contrast (WCAG AA passes).

Color values

HEX#66B2F0
RGBrgb(102, 178, 240)
HSLhsl(207, 82%, 67%)
HSVhsv(207, 58%, 94%)
CMYKcmyk(57.5%, 25.8%, 0%, 5.9%)
CIE-LABlab(70.14, -5.82, -38.03)
CIE-LCHlch(70.14, 38.48, 261.30°)
OKLaboklab(73.96% -0.0499 -0.1068)
OKLCHoklch(73.96% 0.118 245)
XYZxyz(37.1223, 40.9535, 88.3697)
Luminance0.4096 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B2F0 #F0A466
analogous
#66F0E9 #66B2F0 #666DF0
triadic
#66B2F0 #F066B2 #B2F066
tetradic
#66B2F0 #E966F0 #F0A466 #6DF066
square
#66B2F0 #E966F0 #F0A466 #6DF066
split-complementary
#66B2F0 #F0666D #F0E966
monochromatic
#1477C8 #2E96EB #66B2F0 #9ECEF5 #D5EAFB

Accessibility & contrast

On white

2.28
#66B2F0 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.19
#66B2F0 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2F0
9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B2F0#FFFFFF#000000##000000
##66B2F01.002.289.199.19
#FFFFFF2.281.0021.0021.00
#0000009.1921.001.001.00
##0000009.1921.001.001.00

Color blindness preview

Protanopia (red-blind)
#97B3F3
Deuteranopia (green-blind)
#85A5EF
Tritanopia (blue-blind)
#00C1C7
Achromatopsia (no color)
#ABABAB

Design tokens & code

CSS
--color: #66b2f0;
/* rgb */ color: rgb(102, 178, 240);
/* oklch */ color: oklch(74.0% 0.118 245.0);
Tailwind
colors: {
  custom: {
    50: '#9cc8f5',
    500: '#66b2f0',
    950: '#000000',
  },
}
SCSS
$custom: #66b2f0;
$custom-light: #9cc8f5;
$custom-dark: #000000;
JSON
{
  "hex": "#66b2f0",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 240
  },
  "hsl": {
    "h": 206.957,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.73964,
    "c": 0.11783,
    "h": 245
  },
  "luminance": 0.40957
}

Semantic roles & 50–950 ramp

primary
#66B2F0
secondary
#EFD7C3
accent
#6807DF
background
#FAFCFE
surface
#F4F8FD
border
#CED1D5
text
#0F1317
muted
#7F8285

Preview Lab

Preview with #66B2F0

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

Preview Lab → · Contrast checker → · Palette generator →

#66B2F0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva