#66CBFB#66CBFB

#66CBFB is a light, moderate cyan. Relative luminance 0.525; OKLCH L 80.0% C 0.116 H 231.3°. Best body text is #000000 at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#66CBFB
RGB	rgb(102, 203, 251)
HSL	hsl(199, 95%, 69%)
HSV	hsv(199, 59%, 98%)
CMYK	cmyk(59.4%, 19.1%, 0%, 1.6%)
CIE-LAB	lab(77.58, -15.86, -32.45)
CIE-LCH	lch(77.58, 36.11, 243.96°)
OKLab	oklab(80% -0.0726 -0.0906)
OKLCH	oklch(80% 0.116 231.3)
XYZ	xyz(44.2413, 52.4974, 99.0496)
Luminance	0.5250 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CBFB #FB9666

analogous

#66FBE1 #66CBFB #6681FB

triadic

#66CBFB #FB66CB #CBFB66

tetradic

#66CBFB #E166FB #FB9666 #81FB66

square

#66CBFB #E166FB #FB9666 #81FB66

split-complementary

#66CBFB #FB6681 #FBE166

monochromatic

#069AE1 #2AB7F9 #66CBFB #A2DFFD #DDF4FE

Accessibility & contrast

On white

1.83

#66CBFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.50

#66CBFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CBFB

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CBFB	#FFFFFF	#000000	##000000
##66CBFB	1.00	1.83	11.50	11.50
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.50	21.00	1.00	1.00
##000000	11.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C8FD

Deuteranopia (green-blind)

#9EB9FA

Tritanopia (blue-blind)

#00D8DB

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66cbfb;
/* rgb */ color: rgb(102, 203, 251);
/* oklch */ color: oklch(80.0% 0.116 231.3);

Tailwind

colors: {
  custom: {
    50: '#9edafc',
    500: '#66cbfb',
    950: '#000000',
  },
}

SCSS

$custom: #66cbfb;
$custom-light: #9edafc;
$custom-dark: #000000;

JSON

{
  "hex": "#66cbfb",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 251
  },
  "hsl": {
    "h": 199.329,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.80001,
    "c": 0.11612,
    "h": 231.3
  },
  "luminance": 0.52502
}

Semantic roles & 50–950 ramp

primary

#66CBFB

secondary

#D56530

accent

#4A00E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CBFB

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

Preview Lab → · Contrast checker → · Palette generator →