#66CBEF#66CBEF

#66CBEF is a light, moderate cyan. Relative luminance 0.518; OKLCH L 79.5% C 0.107 H 224.0°. Best body text is #000000 at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#66CBEF
RGB	rgb(102, 203, 239)
HSL	hsl(196, 81%, 67%)
HSV	hsv(196, 57%, 94%)
CMYK	cmyk(57.3%, 15.1%, 0%, 6.3%)
CIE-LAB	lab(77.14, -19.39, -26.69)
CIE-LCH	lch(77.14, 33.00, 234.00°)
OKLab	oklab(79.51% -0.0769 -0.0742)
OKLCH	oklch(79.51% 0.107 224)
XYZ	xyz(42.4093, 51.7646, 89.4012)
Luminance	0.5177 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CBEF #EF8A66

analogous

#66EFCE #66CBEF #6687EF

triadic

#66CBEF #EF66CB #CBEF66

tetradic

#66CBEF #CE66EF #EF8A66 #87EF66

square

#66CBEF #CE66EF #EF8A66 #87EF66

split-complementary

#66CBEF #EF6687 #EFCE66

monochromatic

#1597C6 #2FB8E9 #66CBEF #9DDEF5 #D5F1FB

Accessibility & contrast

On white

1.85

#66CBEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.35

#66CBEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CBEF

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CBEF	#FFFFFF	#000000	##000000
##66CBEF	1.00	1.85	11.35	11.35
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.35	21.00	1.00	1.00
##000000	11.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C7F1

Deuteranopia (green-blind)

#A3B8EF

Tritanopia (blue-blind)

#00D6D6

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #66cbef;
/* rgb */ color: rgb(102, 203, 239);
/* oklch */ color: oklch(79.5% 0.107 224.0);

Tailwind

colors: {
  custom: {
    50: '#9cdbf4',
    500: '#66cbef',
    950: '#000000',
  },
}

SCSS

$custom: #66cbef;
$custom-light: #9cdbf4;
$custom-dark: #000000;

JSON

{
  "hex": "#66cbef",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 239
  },
  "hsl": {
    "h": 195.766,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.79507,
    "c": 0.10688,
    "h": 224
  },
  "luminance": 0.51769
}

Semantic roles & 50–950 ramp

primary

#66CBEF

secondary

#C35B36

accent

#4008DD

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CBEF

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

Preview Lab → · Contrast checker → · Palette generator →