#66ADDB#66ADDB

#66ADDB is a light, moderate cyan. Relative luminance 0.378; OKLCH L 71.9% C 0.098 H 238.6°. Best body text is #000000 at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#66ADDB
RGB	rgb(102, 173, 219)
HSL	hsl(204, 62%, 63%)
HSV	hsv(204, 53%, 86%)
CMYK	cmyk(53.4%, 21%, 0%, 14.1%)
CIE-LAB	lab(67.89, -9.45, -30.05)
CIE-LCH	lch(67.89, 31.50, 252.54°)
OKLab	oklab(71.9% -0.0512 -0.0838)
OKLCH	oklch(71.9% 0.098 238.6)
XYZ	xyz(33.2046, 37.8236, 72.5550)
Luminance	0.3783 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADDB #DB9466

analogous

#66DBCF #66ADDB #6672DB

triadic

#66ADDB #DB66AD #ADDB66

tetradic

#66ADDB #CF66DB #DB9466 #72DB66

square

#66ADDB #CF66DB #DB9466 #72DB66

split-complementary

#66ADDB #DB6672 #DBCF66

monochromatic

#2670A1 #3492CF #66ADDB #98C8E7 #C9E2F2

Accessibility & contrast

On white

2.45

#66ADDB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.57

#66ADDB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADDB

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADDB	#FFFFFF	#000000	##000000
##66ADDB	1.00	2.45	8.57	8.57
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.57	21.00	1.00	1.00
##000000	8.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98ACDD

Deuteranopia (green-blind)

#88A0DA

Tritanopia (blue-blind)

#16B9BC

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66addb;
/* rgb */ color: rgb(102, 173, 219);
/* oklch */ color: oklch(71.9% 0.098 238.6);

Tailwind

colors: {
  custom: {
    50: '#99c5e6',
    500: '#66addb',
    950: '#000000',
  },
}

SCSS

$custom: #66addb;
$custom-light: #99c5e6;
$custom-dark: #000000;

JSON

{
  "hex": "#66addb",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 219
  },
  "hsl": {
    "h": 203.59,
    "s": 61.905,
    "l": 62.941
  },
  "oklch": {
    "l": 0.71904,
    "c": 0.09823,
    "h": 238.6
  },
  "luminance": 0.37826
}

Semantic roles & 50–950 ramp

primary

#66ADDB

secondary

#E3CAB9

accent

#601CCA

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #66ADDB

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

Preview Lab → · Contrast checker → · Palette generator →