#66BCCE#66BCCE

#66BCCE is a light, moderate cyan. Relative luminance 0.432; OKLCH L 74.8% C 0.087 H 212.9°. Best body text is #000000 at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#66BCCE
RGB	rgb(102, 188, 206)
HSL	hsl(190, 51%, 60%)
HSV	hsv(190, 50%, 81%)
CMYK	cmyk(50.5%, 8.7%, 0%, 19.2%)
CIE-LAB	lab(71.72, -21.10, -17.08)
CIE-LCH	lch(71.72, 27.14, 218.99°)
OKLab	oklab(74.8% -0.073 -0.0472)
OKLCH	oklch(74.8% 0.087 212.9)
XYZ	xyz(34.5990, 43.2445, 64.9043)
Luminance	0.4325 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCCE #CE7866

analogous

#66CEAC #66BCCE #6688CE

triadic

#66BCCE #CE66BC #BCCE66

tetradic

#66BCCE #AC66CE #CE7866 #88CE66

square

#66BCCE #AC66CE #CE7866 #88CE66

split-complementary

#66BCCE #CE6688 #CEAC66

monochromatic

#2D7C8D #3CA5BB #66BCCE #94D0DD #C3E5EC

Accessibility & contrast

On white

2.18

#66BCCE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.65

#66BCCE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCCE

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCCE	#FFFFFF	#000000	##000000
##66BCCE	1.00	2.18	9.65	9.65
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.65	21.00	1.00	1.00
##000000	9.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEB7CF

Deuteranopia (green-blind)

#9EABCE

Tritanopia (blue-blind)

#24C3C1

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66bcce;
/* rgb */ color: rgb(102, 188, 206);
/* oklch */ color: oklch(74.8% 0.087 212.9);

Tailwind

colors: {
  custom: {
    50: '#99d0dd',
    500: '#66bcce',
    950: '#000000',
  },
}

SCSS

$custom: #66bcce;
$custom-light: #99d0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#66bcce",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 206
  },
  "hsl": {
    "h": 190.385,
    "s": 51.485,
    "l": 60.392
  },
  "oklch": {
    "l": 0.748,
    "c": 0.08691,
    "h": 212.9
  },
  "luminance": 0.43247
}

Semantic roles & 50–950 ramp

primary

#66BCCE

secondary

#DCBBB4

accent

#4127BF

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #66BCCE

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

Preview Lab → · Contrast checker → · Palette generator →