#66E1FE#66E1FE

#66E1FE is a very light, moderate cyan. Relative luminance 0.638; OKLCH L 85.1% C 0.116 H 215.7°. Best body text is #000000 at 13.77:1 contrast (WCAG AA passes).

Color values

HEX	#66E1FE
RGB	rgb(102, 225, 254)
HSL	hsl(191, 99%, 70%)
HSV	hsv(191, 60%, 100%)
CMYK	cmyk(59.8%, 11.4%, 0%, 0.4%)
CIE-LAB	lab(83.88, -26.10, -24.40)
CIE-LCH	lch(83.88, 35.73, 223.07°)
OKLab	oklab(85.07% -0.0942 -0.0677)
OKLCH	oklch(85.07% 0.116 215.7)
XYZ	xyz(50.2869, 63.8259, 103.4162)
Luminance	0.6383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E1FE #FE8366

analogous

#66FECF #66E1FE #6695FE

triadic

#66E1FE #FE66E1 #E1FE66

tetradic

#66E1FE #CF66FE #FE8366 #95FE66

square

#66E1FE #CF66FE #FE8366 #95FE66

split-complementary

#66E1FE #FE6695 #FECF66

monochromatic

#02BCE8 #29D5FE #66E1FE #A3EDFE #E0F9FF

Accessibility & contrast

On white

1.53

#66E1FE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.77

#66E1FE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E1FE

13.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E1FE	#FFFFFF	#000000	##000000
##66E1FE	1.00	1.53	13.77	13.77
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.77	21.00	1.00	1.00
##000000	13.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CDDBFF

Deuteranopia (green-blind)

#B7CAFE

Tritanopia (blue-blind)

#00ECEA

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #66e1fe;
/* rgb */ color: rgb(102, 225, 254);
/* oklch */ color: oklch(85.1% 0.116 215.7);

Tailwind

colors: {
  custom: {
    50: '#9feafe',
    500: '#66e1fe',
    950: '#000000',
  },
}

SCSS

$custom: #66e1fe;
$custom-light: #9feafe;
$custom-dark: #000000;

JSON

{
  "hex": "#66e1fe",
  "rgb": {
    "r": 102,
    "g": 225,
    "b": 254
  },
  "hsl": {
    "h": 191.447,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.85069,
    "c": 0.11602,
    "h": 215.7
  },
  "luminance": 0.63831
}

Semantic roles & 50–950 ramp

primary

#66E1FE

secondary

#D9502F

accent

#2C00E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66E1FE

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

Preview Lab → · Contrast checker → · Palette generator →