#66BBCC#66BBCC

#66BBCC is a light, moderate cyan. Relative luminance 0.427; OKLCH L 74.5% C 0.086 H 212.1°. Best body text is #000000 at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#66BBCC
RGB	rgb(102, 187, 204)
HSL	hsl(190, 50%, 60%)
HSV	hsv(190, 50%, 80%)
CMYK	cmyk(50%, 8.3%, 0%, 20%)
CIE-LAB	lab(71.37, -21.14, -16.52)
CIE-LCH	lch(71.37, 26.83, 218.01°)
OKLab	oklab(74.49% -0.0727 -0.0456)
OKLCH	oklch(74.49% 0.086 212.1)
XYZ	xyz(34.1447, 42.7221, 63.5619)
Luminance	0.4273 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBCC #CC7766

analogous

#66CCAA #66BBCC #6688CC

triadic

#66BBCC #CC66BB #BBCC66

tetradic

#66BBCC #AA66CC #CC7766 #88CC66

square

#66BBCC #AA66CC #CC7766 #88CC66

split-complementary

#66BBCC #CC6688 #CCAA66

monochromatic

#2E7A8A #3DA3B8 #66BBCC #94CFDB #C2E4EB

Accessibility & contrast

On white

2.20

#66BBCC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.55

#66BBCC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBCC

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBCC	#FFFFFF	#000000	##000000
##66BBCC	1.00	2.20	9.55	9.55
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.55	21.00	1.00	1.00
##000000	9.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADB6CD

Deuteranopia (green-blind)

#9DAACC

Tritanopia (blue-blind)

#27C2C0

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66bbcc;
/* rgb */ color: rgb(102, 187, 204);
/* oklch */ color: oklch(74.5% 0.086 212.1);

Tailwind

colors: {
  custom: {
    50: '#99cfdb',
    500: '#66bbcc',
    950: '#000000',
  },
}

SCSS

$custom: #66bbcc;
$custom-light: #99cfdb;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbcc",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 204
  },
  "hsl": {
    "h": 190,
    "s": 50,
    "l": 60
  },
  "oklch": {
    "l": 0.74494,
    "c": 0.08578,
    "h": 212.1
  },
  "luminance": 0.42725
}

Semantic roles & 50–950 ramp

primary

#66BBCC

secondary

#DBBAB3

accent

#654EDA

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #66BBCC

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

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