#66CEFB#66CEFB

#66CEFB is a light, moderate cyan. Relative luminance 0.539; OKLCH L 80.7% C 0.115 H 228.9°. Best body text is #000000 at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#66CEFB
RGB	rgb(102, 206, 251)
HSL	hsl(198, 95%, 69%)
HSV	hsv(198, 59%, 98%)
CMYK	cmyk(59.4%, 17.9%, 0%, 1.6%)
CIE-LAB	lab(78.42, -17.41, -31.15)
CIE-LCH	lch(78.42, 35.69, 240.80°)
OKLab	oklab(80.67% -0.0757 -0.0869)
OKLCH	oklch(80.67% 0.115 228.9)
XYZ	xyz(44.9566, 53.9280, 99.2880)
Luminance	0.5393 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CEFB #FB9366

analogous

#66FBDE #66CEFB #6684FB

triadic

#66CEFB #FB66CE #CEFB66

tetradic

#66CEFB #DE66FB #FB9366 #84FB66

square

#66CEFB #DE66FB #FB9366 #84FB66

split-complementary

#66CEFB #FB6684 #FBDE66

monochromatic

#069FE1 #2ABBF9 #66CEFB #A2E1FD #DDF4FE

Accessibility & contrast

On white

1.78

#66CEFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.79

#66CEFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CEFB

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CEFB	#FFFFFF	#000000	##000000
##66CEFB	1.00	1.78	11.79	11.79
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.79	21.00	1.00	1.00
##000000	11.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7CBFD

Deuteranopia (green-blind)

#A2BBFA

Tritanopia (blue-blind)

#00DBDD

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #66cefb;
/* rgb */ color: rgb(102, 206, 251);
/* oklch */ color: oklch(80.7% 0.115 228.9);

Tailwind

colors: {
  custom: {
    50: '#9eddfc',
    500: '#66cefb',
    950: '#000000',
  },
}

SCSS

$custom: #66cefb;
$custom-light: #9eddfc;
$custom-dark: #000000;

JSON

{
  "hex": "#66cefb",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 251
  },
  "hsl": {
    "h": 198.121,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.80672,
    "c": 0.11528,
    "h": 228.9
  },
  "luminance": 0.53932
}

Semantic roles & 50–950 ramp

primary

#66CEFB

secondary

#D56230

accent

#4500E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CEFB

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

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