#66ADCD#66ADCD

#66ADCD is a light, moderate cyan. Relative luminance 0.371; OKLCH L 71.3% C 0.085 H 228.8°. Best body text is #000000 at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#66ADCD
RGB	rgb(102, 173, 205)
HSL	hsl(199, 51%, 60%)
HSV	hsv(199, 50%, 80%)
CMYK	cmyk(50.2%, 15.6%, 0%, 19.6%)
CIE-LAB	lab(67.36, -13.54, -23.15)
CIE-LCH	lch(67.36, 26.82, 239.67°)
OKLab	oklab(71.31% -0.0562 -0.0642)
OKLCH	oklch(71.31% 0.085 228.8)
XYZ	xyz(31.4384, 37.1171, 63.2534)
Luminance	0.3712 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADCD #CD8666

analogous

#66CDBA #66ADCD #6679CD

triadic

#66ADCD #CD66AD #ADCD66

tetradic

#66ADCD #BA66CD #CD8666 #79CD66

square

#66ADCD #BA66CD #CD8666 #79CD66

split-complementary

#66ADCD #CD6679 #CDBA66

monochromatic

#2D6E8B #3D93B9 #66ADCD #94C6DC #C2DEEB

Accessibility & contrast

On white

2.49

#66ADCD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.42

#66ADCD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADCD

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADCD	#FFFFFF	#000000	##000000
##66ADCD	1.00	2.49	8.42	8.42
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.42	21.00	1.00	1.00
##000000	8.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DAACF

Deuteranopia (green-blind)

#8E9FCD

Tritanopia (blue-blind)

#2CB6B7

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66adcd;
/* rgb */ color: rgb(102, 173, 205);
/* oklch */ color: oklch(71.3% 0.085 228.8);

Tailwind

colors: {
  custom: {
    50: '#98c5dc',
    500: '#66adcd',
    950: '#000000',
  },
}

SCSS

$custom: #66adcd;
$custom-light: #98c5dc;
$custom-dark: #000000;

JSON

{
  "hex": "#66adcd",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 205
  },
  "hsl": {
    "h": 198.641,
    "s": 50.739,
    "l": 60.196
  },
  "oklch": {
    "l": 0.71313,
    "c": 0.0853,
    "h": 228.8
  },
  "luminance": 0.3712
}

Semantic roles & 50–950 ramp

primary

#66ADCD

secondary

#DBC0B4

accent

#5627BE

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0E1215

muted

#7E8183

Preview Lab

Preview with #66ADCD

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

Preview Lab → · Contrast checker → · Palette generator →