#66CBF5#66CBF5

#66CBF5 is a light, moderate cyan. Relative luminance 0.521; OKLCH L 79.8% C 0.111 H 227.8°. Best body text is #000000 at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#66CBF5
RGB	rgb(102, 203, 245)
HSL	hsl(198, 88%, 68%)
HSV	hsv(198, 58%, 96%)
CMYK	cmyk(58.4%, 17.1%, 0%, 3.9%)
CIE-LAB	lab(77.36, -17.64, -29.58)
CIE-LCH	lch(77.36, 34.44, 239.19°)
OKLab	oklab(79.75% -0.0747 -0.0824)
OKLCH	oklch(79.75% 0.111 227.8)
XYZ	xyz(43.3105, 52.1251, 94.1472)
Luminance	0.5213 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CBF5 #F59066

analogous

#66F5D7 #66CBF5 #6684F5

triadic

#66CBF5 #F566CB #CBF566

tetradic

#66CBF5 #D766F5 #F59066 #84F566

square

#66CBF5 #D766F5 #F59066 #84F566

split-complementary

#66CBF5 #F56684 #F5D766

monochromatic

#0E99D3 #2DB7F1 #66CBF5 #9FDFF9 #D9F2FD

Accessibility & contrast

On white

1.84

#66CBF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.43

#66CBF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CBF5

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CBF5	#FFFFFF	#000000	##000000
##66CBF5	1.00	1.84	11.43	11.43
#FFFFFF	1.84	1.00	21.00	21.00
#000000	11.43	21.00	1.00	1.00
##000000	11.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C8F7

Deuteranopia (green-blind)

#A1B8F4

Tritanopia (blue-blind)

#00D7D9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #66cbf5;
/* rgb */ color: rgb(102, 203, 245);
/* oklch */ color: oklch(79.8% 0.111 227.8);

Tailwind

colors: {
  custom: {
    50: '#9ddaf8',
    500: '#66cbf5',
    950: '#000000',
  },
}

SCSS

$custom: #66cbf5;
$custom-light: #9ddaf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66cbf5",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 245
  },
  "hsl": {
    "h": 197.622,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.79751,
    "c": 0.11126,
    "h": 227.8
  },
  "luminance": 0.52129
}

Semantic roles & 50–950 ramp

primary

#66CBF5

secondary

#CE5F31

accent

#4401E4

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CBF5

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

Preview Lab → · Contrast checker → · Palette generator →