#66ADD2#66ADD2

#66ADD2 is a light, moderate cyan. Relative luminance 0.374; OKLCH L 71.5% C 0.090 H 232.7°. Best body text is #000000 at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#66ADD2
RGB	rgb(102, 173, 210)
HSL	hsl(201, 55%, 61%)
HSV	hsv(201, 51%, 82%)
CMYK	cmyk(51.4%, 17.6%, 0%, 17.6%)
CIE-LAB	lab(67.55, -12.10, -25.62)
CIE-LCH	lch(67.55, 28.34, 244.73°)
OKLab	oklab(71.52% -0.0543 -0.0712)
OKLCH	oklch(71.52% 0.09 232.7)
XYZ	xyz(32.0516, 37.3624, 66.4829)
Luminance	0.3736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADD2 #D28B66

analogous

#66D2C1 #66ADD2 #6677D2

triadic

#66ADD2 #D266AD #ADD266

tetradic

#66ADD2 #C166D2 #D28B66 #77D266

square

#66ADD2 #C166D2 #D28B66 #77D266

split-complementary

#66ADD2 #D26677 #D2C166

monochromatic

#2B6F93 #3993C2 #66ADD2 #95C6E0 #C5E0EE

Accessibility & contrast

On white

2.48

#66ADD2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.47

#66ADD2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADD2

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADD2	#FFFFFF	#000000	##000000
##66ADD2	1.00	2.48	8.47	8.47
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.47	21.00	1.00	1.00
##000000	8.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BABD4

Deuteranopia (green-blind)

#8C9FD1

Tritanopia (blue-blind)

#26B7B9

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66add2;
/* rgb */ color: rgb(102, 173, 210);
/* oklch */ color: oklch(71.5% 0.090 232.7);

Tailwind

colors: {
  custom: {
    50: '#98c5e0',
    500: '#66add2',
    950: '#000000',
  },
}

SCSS

$custom: #66add2;
$custom-light: #98c5e0;
$custom-dark: #000000;

JSON

{
  "hex": "#66add2",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 210
  },
  "hsl": {
    "h": 200.556,
    "s": 54.545,
    "l": 61.176
  },
  "oklch": {
    "l": 0.71519,
    "c": 0.08959,
    "h": 232.7
  },
  "luminance": 0.37365
}

Semantic roles & 50–950 ramp

primary

#66ADD2

secondary

#DEC4B6

accent

#5A23C2

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0E1215

muted

#7E8183

Preview Lab

Preview with #66ADD2

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

Preview Lab → · Contrast checker → · Palette generator →