#66DCF4#66DCF4

#66DCF4 is a very light, moderate cyan. Relative luminance 0.605; OKLCH L 83.6% C 0.111 H 213.0°. Best body text is #000000 at 13.11:1 contrast (WCAG AA passes).

Color values

HEX	#66DCF4
RGB	rgb(102, 220, 244)
HSL	hsl(190, 87%, 68%)
HSV	hsv(190, 58%, 96%)
CMYK	cmyk(58.2%, 9.8%, 0%, 4.3%)
CIE-LAB	lab(82.13, -26.48, -21.76)
CIE-LCH	lch(82.13, 34.27, 219.41°)
OKLab	oklab(83.56% -0.0928 -0.0603)
OKLCH	oklch(83.56% 0.111 213)
XYZ	xyz(47.3952, 60.5381, 94.7577)
Luminance	0.6054 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DCF4 #F47E66

analogous

#66F4C5 #66DCF4 #6695F4

triadic

#66DCF4 #F466DC #DCF466

tetradic

#66DCF4 #C566F4 #F47E66 #95F466

square

#66DCF4 #C566F4 #F47E66 #95F466

split-complementary

#66DCF4 #F46695 #F4C566

monochromatic

#0FB0D1 #2DCFF0 #66DCF4 #9FE9F8 #D8F6FC

Accessibility & contrast

On white

1.60

#66DCF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.11

#66DCF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DCF4

13.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DCF4	#FFFFFF	#000000	##000000
##66DCF4	1.00	1.60	13.11	13.11
#FFFFFF	1.60	1.00	21.00	21.00
#000000	13.11	21.00	1.00	1.00
##000000	13.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAD5F5

Deuteranopia (green-blind)

#B4C5F4

Tritanopia (blue-blind)

#00E6E3

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #66dcf4;
/* rgb */ color: rgb(102, 220, 244);
/* oklch */ color: oklch(83.6% 0.111 213.0);

Tailwind

colors: {
  custom: {
    50: '#9ee7f7',
    500: '#66dcf4',
    950: '#000000',
  },
}

SCSS

$custom: #66dcf4;
$custom-light: #9ee7f7;
$custom-dark: #000000;

JSON

{
  "hex": "#66dcf4",
  "rgb": {
    "r": 102,
    "g": 220,
    "b": 244
  },
  "hsl": {
    "h": 190.141,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.83559,
    "c": 0.11072,
    "h": 213
  },
  "luminance": 0.60543
}

Semantic roles & 50–950 ramp

primary

#66DCF4

secondary

#CC4C32

accent

#2802E3

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#101617

muted

#808485

Preview Lab

Preview with #66DCF4

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

Preview Lab → · Contrast checker → · Palette generator →