#66D0FE#66D0FE

#66D0FE is a light, moderate cyan. Relative luminance 0.551; OKLCH L 81.2% C 0.117 H 229.1°. Best body text is #000000 at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#66D0FE
RGB	rgb(102, 208, 254)
HSL	hsl(198, 99%, 70%)
HSV	hsv(198, 60%, 100%)
CMYK	cmyk(59.8%, 18.1%, 0%, 0.4%)
CIE-LAB	lab(79.09, -17.55, -31.72)
CIE-LCH	lch(79.09, 36.25, 241.04°)
OKLab	oklab(81.24% -0.0767 -0.0885)
OKLCH	oklch(81.24% 0.117 229.1)
XYZ	xyz(45.9178, 55.0878, 101.9598)
Luminance	0.5509 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D0FE #FE9466

analogous

#66FEE0 #66D0FE #6684FE

triadic

#66D0FE #FE66D0 #D0FE66

tetradic

#66D0FE #E066FE #FE9466 #84FE66

square

#66D0FE #E066FE #FE9466 #84FE66

split-complementary

#66D0FE #FE6684 #FEE066

monochromatic

#02A2E8 #29BDFE #66D0FE #A3E3FE #E0F5FF

Accessibility & contrast

On white

1.75

#66D0FE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.02

#66D0FE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D0FE

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D0FE	#FFFFFF	#000000	##000000
##66D0FE	1.00	1.75	12.02	12.02
#FFFFFF	1.75	1.00	21.00	21.00
#000000	12.02	21.00	1.00	1.00
##000000	12.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8CDFF

Deuteranopia (green-blind)

#A3BDFD

Tritanopia (blue-blind)

#00DDDF

Achromatopsia (no color)

#C4C4C4

Design tokens & code

CSS

--color: #66d0fe;
/* rgb */ color: rgb(102, 208, 254);
/* oklch */ color: oklch(81.2% 0.117 229.1);

Tailwind

colors: {
  custom: {
    50: '#9edeff',
    500: '#66d0fe',
    950: '#000000',
  },
}

SCSS

$custom: #66d0fe;
$custom-light: #9edeff;
$custom-dark: #000000;

JSON

{
  "hex": "#66d0fe",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 254
  },
  "hsl": {
    "h": 198.158,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.81244,
    "c": 0.11715,
    "h": 229.1
  },
  "luminance": 0.55092
}

Semantic roles & 50–950 ramp

primary

#66D0FE

secondary

#D9632F

accent

#4500E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101518

muted

#808486

Preview Lab

Preview with #66D0FE

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

Preview Lab → · Contrast checker → · Palette generator →