#66A8F0#66A8F0

#66A8F0 is a light, vivid cyan. Relative luminance 0.371; OKLCH L 71.8% C 0.126 H 251.8°. Best body text is #000000 at 8.42:1 contrast (WCAG AA passes).

Color values

HEX#66A8F0
RGBrgb(102, 168, 240)
HSLhsl(211, 82%, 67%)
HSVhsv(211, 58%, 94%)
CMYKcmyk(57.5%, 30%, 0%, 5.9%)
CIE-LABlab(67.37, -0.25, -42.37)
CIE-LCHlch(67.37, 42.37, 269.66°)
OKLaboklab(71.78% -0.0391 -0.1194)
OKLCHoklch(71.78% 0.126 251.8)
XYZxyz(35.2047, 37.1182, 87.7305)
Luminance0.3712 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66A8F0 #F0AE66
analogous
#66EDF0 #66A8F0 #6966F0
triadic
#66A8F0 #F066A8 #A8F066
tetradic
#66A8F0 #F066ED #F0AE66 #66F069
square
#66A8F0 #F066ED #F0AE66 #66F069
split-complementary
#66A8F0 #F06966 #EDF066
monochromatic
#146AC8 #2E88EB #66A8F0 #9EC8F5 #D5E7FB

Accessibility & contrast

On white

2.49
#66A8F0 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.42
#66A8F0 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A8F0
8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66A8F0#FFFFFF#000000##000000
##66A8F01.002.498.428.42
#FFFFFF2.491.0021.0021.00
#0000008.4221.001.001.00
##0000008.4221.001.001.00

Color blindness preview

Protanopia (red-blind)
#8AABF3
Deuteranopia (green-blind)
#789EEF
Tritanopia (blue-blind)
#00B9C1
Achromatopsia (no color)
#A4A4A4

Design tokens & code

CSS
--color: #66a8f0;
/* rgb */ color: rgb(102, 168, 240);
/* oklch */ color: oklch(71.8% 0.126 251.8);
Tailwind
colors: {
  custom: {
    50: '#9bc1f5',
    500: '#66a8f0',
    950: '#000000',
  },
}
SCSS
$custom: #66a8f0;
$custom-light: #9bc1f5;
$custom-dark: #000000;
JSON
{
  "hex": "#66a8f0",
  "rgb": {
    "r": 102,
    "g": 168,
    "b": 240
  },
  "hsl": {
    "h": 211.304,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.71778,
    "c": 0.12563,
    "h": 251.8
  },
  "luminance": 0.37121
}

Semantic roles & 50–950 ramp

primary
#66A8F0
secondary
#EFDAC3
accent
#7707DF
background
#FAFBFE
surface
#F4F7FD
border
#CED0D5
text
#0F1217
muted
#7F8185

Preview Lab

Preview with #66A8F0

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

Preview Lab → · Contrast checker → · Palette generator →

#66A8F0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva