#66C4F2#66C4F2

#66C4F2 is a light, moderate cyan. Relative luminance 0.487; OKLCH L 78.1% C 0.111 H 231.8°. Best body text is #000000 at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#66C4F2
RGB	rgb(102, 196, 242)
HSL	hsl(200, 84%, 67%)
HSV	hsv(200, 58%, 95%)
CMYK	cmyk(57.9%, 19%, 0%, 5.1%)
CIE-LAB	lab(75.27, -14.88, -31.17)
CIE-LCH	lch(75.27, 34.54, 244.48°)
OKLab	oklab(78.05% -0.0684 -0.087)
OKLCH	oklch(78.05% 0.111 231.8)
XYZ	xyz(41.2403, 48.7116, 91.2161)
Luminance	0.4872 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C4F2 #F29466

analogous

#66F2DA #66C4F2 #667EF2

triadic

#66C4F2 #F266C4 #C4F266

tetradic

#66C4F2 #DA66F2 #F29466 #7EF266

square

#66C4F2 #DA66F2 #F29466 #7EF266

split-complementary

#66C4F2 #F2667E #F2DA66

monochromatic

#118FCC #2EAEED #66C4F2 #9EDAF7 #D7F0FC

Accessibility & contrast

On white

1.95

#66C4F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.74

#66C4F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C4F2

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C4F2	#FFFFFF	#000000	##000000
##66C4F2	1.00	1.95	10.74	10.74
#FFFFFF	1.95	1.00	21.00	21.00
#000000	10.74	21.00	1.00	1.00
##000000	10.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADC2F4

Deuteranopia (green-blind)

#9AB3F1

Tritanopia (blue-blind)

#00D1D3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #66c4f2;
/* rgb */ color: rgb(102, 196, 242);
/* oklch */ color: oklch(78.1% 0.111 231.8);

Tailwind

colors: {
  custom: {
    50: '#9cd5f6',
    500: '#66c4f2',
    950: '#000000',
  },
}

SCSS

$custom: #66c4f2;
$custom-light: #9cd5f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66c4f2",
  "rgb": {
    "r": 102,
    "g": 196,
    "b": 242
  },
  "hsl": {
    "h": 199.714,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.78054,
    "c": 0.11066,
    "h": 231.8
  },
  "luminance": 0.48715
}

Semantic roles & 50–950 ramp

primary

#66C4F2

secondary

#F0D2C4

accent

#4D05E1

background

#FAFDFF

surface

#F4FAFE

border

#CED3D6

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #66C4F2

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

Preview Lab → · Contrast checker → · Palette generator →