#66DCF5#66DCF5

#66DCF5 is a very light, moderate cyan. Relative luminance 0.606; OKLCH L 83.6% C 0.111 H 213.7°. Best body text is #000000 at 13.12:1 contrast (WCAG AA passes).

Color values

HEX	#66DCF5
RGB	rgb(102, 220, 245)
HSL	hsl(190, 88%, 68%)
HSV	hsv(190, 58%, 96%)
CMYK	cmyk(58.4%, 10.2%, 0%, 3.9%)
CIE-LAB	lab(82.16, -26.20, -22.24)
CIE-LCH	lch(82.16, 34.36, 220.33°)
OKLab	oklab(83.6% -0.0925 -0.0617)
OKLCH	oklch(83.6% 0.111 213.7)
XYZ	xyz(47.5475, 60.5990, 95.5595)
Luminance	0.6060 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DCF5 #F57F66

analogous

#66F5C7 #66DCF5 #6694F5

triadic

#66DCF5 #F566DC #DCF566

tetradic

#66DCF5 #C766F5 #F57F66 #94F566

square

#66DCF5 #C766F5 #F57F66 #94F566

split-complementary

#66DCF5 #F56694 #F5C766

monochromatic

#0EB0D3 #2DCFF1 #66DCF5 #9FE9F9 #D9F6FD

Accessibility & contrast

On white

1.60

#66DCF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.12

#66DCF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DCF5

13.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DCF5	#FFFFFF	#000000	##000000
##66DCF5	1.00	1.60	13.12	13.12
#FFFFFF	1.60	1.00	21.00	21.00
#000000	13.12	21.00	1.00	1.00
##000000	13.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C9D5F6

Deuteranopia (green-blind)

#B4C6F5

Tritanopia (blue-blind)

#00E6E4

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #66dcf5;
/* rgb */ color: rgb(102, 220, 245);
/* oklch */ color: oklch(83.6% 0.111 213.7);

Tailwind

colors: {
  custom: {
    50: '#9ee7f8',
    500: '#66dcf5',
    950: '#000000',
  },
}

SCSS

$custom: #66dcf5;
$custom-light: #9ee7f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66dcf5",
  "rgb": {
    "r": 102,
    "g": 220,
    "b": 245
  },
  "hsl": {
    "h": 190.49,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.83596,
    "c": 0.11115,
    "h": 213.7
  },
  "luminance": 0.60604
}

Semantic roles & 50–950 ramp

primary

#66DCF5

secondary

#CE4D31

accent

#2901E4

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #66DCF5

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

Preview Lab → · Contrast checker → · Palette generator →