#66E3FC#66E3FC

#66E3FC is a very light, moderate cyan. Relative luminance 0.648; OKLCH L 85.4% C 0.115 H 212.9°. Best body text is #000000 at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#66E3FC
RGB	rgb(102, 227, 252)
HSL	hsl(190, 96%, 69%)
HSV	hsv(190, 60%, 99%)
CMYK	cmyk(59.5%, 9.9%, 0%, 1.2%)
CIE-LAB	lab(84.37, -27.64, -22.58)
CIE-LCH	lch(84.37, 35.70, 219.25°)
OKLab	oklab(85.45% -0.097 -0.0626)
OKLCH	oklch(85.45% 0.115 212.9)
XYZ	xyz(50.5121, 64.7861, 101.9195)
Luminance	0.6479 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E3FC #FC7F66

analogous

#66FCCA #66E3FC #6698FC

triadic

#66E3FC #FC66E3 #E3FC66

tetradic

#66E3FC #CA66FC #FC7F66 #98FC66

square

#66E3FC #CA66FC #FC7F66 #98FC66

split-complementary

#66E3FC #FC6698 #FCCA66

monochromatic

#04BEE3 #2AD8FB #66E3FC #A2EEFD #DEF9FE

Accessibility & contrast

On white

1.50

#66E3FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.96

#66E3FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E3FC

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E3FC	#FFFFFF	#000000	##000000
##66E3FC	1.00	1.50	13.96	13.96
#FFFFFF	1.50	1.00	21.00	21.00
#000000	13.96	21.00	1.00	1.00
##000000	13.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0DCFD

Deuteranopia (green-blind)

#B9CBFC

Tritanopia (blue-blind)

#00EDEB

Achromatopsia (no color)

#D2D2D2

Design tokens & code

CSS

--color: #66e3fc;
/* rgb */ color: rgb(102, 227, 252);
/* oklch */ color: oklch(85.4% 0.115 212.9);

Tailwind

colors: {
  custom: {
    50: '#9fecfd',
    500: '#66e3fc',
    950: '#000000',
  },
}

SCSS

$custom: #66e3fc;
$custom-light: #9fecfd;
$custom-dark: #000000;

JSON

{
  "hex": "#66e3fc",
  "rgb": {
    "r": 102,
    "g": 227,
    "b": 252
  },
  "hsl": {
    "h": 190,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.85447,
    "c": 0.11546,
    "h": 212.9
  },
  "luminance": 0.64791
}

Semantic roles & 50–950 ramp

primary

#66E3FC

secondary

#D64C30

accent

#2600E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66E3FC

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

Preview Lab → · Contrast checker → · Palette generator →