#66E1FD#66E1FD

#66E1FD is a very light, moderate cyan. Relative luminance 0.638; OKLCH L 85.0% C 0.116 H 215.1°. Best body text is #000000 at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#66E1FD
RGB	rgb(102, 225, 253)
HSL	hsl(191, 97%, 70%)
HSV	hsv(191, 60%, 99%)
CMYK	cmyk(59.7%, 11.1%, 0%, 0.8%)
CIE-LAB	lab(83.84, -26.38, -23.92)
CIE-LCH	lch(83.84, 35.61, 222.20°)
OKLab	oklab(85.03% -0.0946 -0.0664)
OKLCH	oklch(85.03% 0.116 215.1)
XYZ	xyz(50.1271, 63.7620, 102.5750)
Luminance	0.6377 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E1FD #FD8266

analogous

#66FDCE #66E1FD #6696FD

triadic

#66E1FD #FD66E1 #E1FD66

tetradic

#66E1FD #CE66FD #FD8266 #96FD66

square

#66E1FD #CE66FD #FD8266 #96FD66

split-complementary

#66E1FD #FD6696 #FDCE66

monochromatic

#03BCE6 #2AD5FC #66E1FD #A2EDFE #DFF9FF

Accessibility & contrast

On white

1.53

#66E1FD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.75

#66E1FD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E1FD

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E1FD	#FFFFFF	#000000	##000000
##66E1FD	1.00	1.53	13.75	13.75
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.75	21.00	1.00	1.00
##000000	13.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CDDAFF

Deuteranopia (green-blind)

#B7CAFD

Tritanopia (blue-blind)

#00ECEA

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #66e1fd;
/* rgb */ color: rgb(102, 225, 253);
/* oklch */ color: oklch(85.0% 0.116 215.1);

Tailwind

colors: {
  custom: {
    50: '#9feafe',
    500: '#66e1fd',
    950: '#000000',
  },
}

SCSS

$custom: #66e1fd;
$custom-light: #9feafe;
$custom-dark: #000000;

JSON

{
  "hex": "#66e1fd",
  "rgb": {
    "r": 102,
    "g": 225,
    "b": 253
  },
  "hsl": {
    "h": 191.126,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.85031,
    "c": 0.11555,
    "h": 215.1
  },
  "luminance": 0.63767
}

Semantic roles & 50–950 ramp

primary

#66E1FD

secondary

#D84F2F

accent

#2B00E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66E1FD

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

Preview Lab → · Contrast checker → · Palette generator →