#66BCDB#66BCDB

#66BCDB is a light, moderate cyan. Relative luminance 0.439; OKLCH L 75.3% C 0.094 H 223.8°. Best body text is #000000 at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#66BCDB
RGB	rgb(102, 188, 219)
HSL	hsl(196, 62%, 63%)
HSV	hsv(196, 53%, 86%)
CMYK	cmyk(53.4%, 14.2%, 0%, 14.1%)
CIE-LAB	lab(72.16, -17.44, -23.49)
CIE-LCH	lch(72.16, 29.26, 233.42°)
OKLab	oklab(75.3% -0.068 -0.0652)
OKLCH	oklch(75.3% 0.094 223.8)
XYZ	xyz(36.2440, 43.9025, 73.5681)
Luminance	0.4391 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCDB #DB8566

analogous

#66DBBF #66BCDB #6682DB

triadic

#66BCDB #DB66BC #BCDB66

tetradic

#66BCDB #BF66DB #DB8566 #82DB66

square

#66BCDB #BF66DB #DB8566 #82DB66

split-complementary

#66BCDB #DB6682 #DBBF66

monochromatic

#2680A1 #34A6CF #66BCDB #98D2E7 #C9E7F2

Accessibility & contrast

On white

2.15

#66BCDB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.78

#66BCDB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCDB

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCDB	#FFFFFF	#000000	##000000
##66BCDB	1.00	2.15	9.78	9.78
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.78	21.00	1.00	1.00
##000000	9.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB8DD

Deuteranopia (green-blind)

#99ABDB

Tritanopia (blue-blind)

#05C6C6

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66bcdb;
/* rgb */ color: rgb(102, 188, 219);
/* oklch */ color: oklch(75.3% 0.094 223.8);

Tailwind

colors: {
  custom: {
    50: '#9ad0e6',
    500: '#66bcdb',
    950: '#000000',
  },
}

SCSS

$custom: #66bcdb;
$custom-light: #9ad0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#66bcdb",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 219
  },
  "hsl": {
    "h": 195.897,
    "s": 61.905,
    "l": 62.941
  },
  "oklch": {
    "l": 0.753,
    "c": 0.09419,
    "h": 223.8
  },
  "luminance": 0.43906
}

Semantic roles & 50–950 ramp

primary

#66BCDB

secondary

#E3C4B9

accent

#4A1CCA

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1416

muted

#7E8284

Preview Lab

Preview with #66BCDB

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

Preview Lab → · Contrast checker → · Palette generator →