#66A4F4#66A4F4

#66A4F4 is a light, vivid cyan. Relative luminance 0.359; OKLCH L 71.1% C 0.134 H 255.4°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX#66A4F4
RGBrgb(102, 164, 244)
HSLhsl(214, 87%, 68%)
HSVhsv(214, 58%, 96%)
CMYKcmyk(58.2%, 32.8%, 0%, 4.3%)
CIE-LABlab(66.45, 3.28, -46.00)
CIE-LCHlch(66.45, 46.12, 274.07°)
OKLaboklab(71.12% -0.0338 -0.1299)
OKLCHoklch(71.12% 0.134 255.4)
XYZxyz(35.0783, 35.9043, 90.6521)
Luminance0.3591 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66A4F4 #F4B666
analogous
#66EBF4 #66A4F4 #6F66F4
triadic
#66A4F4 #F466A4 #A4F466
tetradic
#66A4F4 #F466EB #F4B666 #66F46F
square
#66A4F4 #F466EB #F4B666 #66F46F
split-complementary
#66A4F4 #F46F66 #EBF466
monochromatic
#0F64D1 #2D82F0 #66A4F4 #9FC6F8 #D8E8FC

Accessibility & contrast

On white

2.57
#66A4F4 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.18
#66A4F4 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4F4
8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66A4F4#FFFFFF#000000##000000
##66A4F41.002.578.188.18
#FFFFFF2.571.0021.0021.00
#0000008.1821.001.001.00
##0000008.1821.001.001.00

Color blindness preview

Protanopia (red-blind)
#83A9F7
Deuteranopia (green-blind)
#709BF2
Tritanopia (blue-blind)
#00B6C1
Achromatopsia (no color)
#A2A2A2

Design tokens & code

CSS
--color: #66a4f4;
/* rgb */ color: rgb(102, 164, 244);
/* oklch */ color: oklch(71.1% 0.134 255.4);
Tailwind
colors: {
  custom: {
    50: '#9cbef8',
    500: '#66a4f4',
    950: '#000000',
  },
}
SCSS
$custom: #66a4f4;
$custom-light: #9cbef8;
$custom-dark: #000000;
JSON
{
  "hex": "#66a4f4",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 244
  },
  "hsl": {
    "h": 213.803,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.71119,
    "c": 0.13427,
    "h": 255.4
  },
  "luminance": 0.35907
}

Semantic roles & 50–950 ramp

primary
#66A4F4
secondary
#F1DEC5
accent
#8102E3
background
#FAFBFF
surface
#F4F6FF
border
#CED0D7
text
#0F1217
muted
#7F8185

Preview Lab

Preview with #66A4F4

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

Preview Lab → · Contrast checker → · Palette generator →

#66A4F4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva