#66AEDD#66AEDD

#66AEDD is a light, moderate cyan. Relative luminance 0.383; OKLCH L 72.2% C 0.100 H 238.8°. Best body text is #000000 at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#66AEDD
RGB	rgb(102, 174, 221)
HSL	hsl(204, 64%, 63%)
HSV	hsv(204, 54%, 87%)
CMYK	cmyk(53.8%, 21.3%, 0%, 13.3%)
CIE-LAB	lab(68.25, -9.40, -30.59)
CIE-LCH	lch(68.25, 32.00, 252.92°)
OKLab	oklab(72.22% -0.0516 -0.0854)
OKLCH	oklch(72.22% 0.1 238.8)
XYZ	xyz(33.6619, 38.3145, 74.0141)
Luminance	0.3832 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEDD #DD9566

analogous

#66DDD0 #66AEDD #6672DD

triadic

#66AEDD #DD66AE #AEDD66

tetradic

#66AEDD #D066DD #DD9566 #72DD66

square

#66AEDD #D066DD #DD9566 #72DD66

split-complementary

#66AEDD #DD6672 #DDD066

monochromatic

#2472A4 #3493D2 #66AEDD #98C9E8 #CAE3F3

Accessibility & contrast

On white

2.42

#66AEDD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.66

#66AEDD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEDD

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEDD	#FFFFFF	#000000	##000000
##66AEDD	1.00	2.42	8.66	8.66
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.66	21.00	1.00	1.00
##000000	8.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99ADDF

Deuteranopia (green-blind)

#89A1DC

Tritanopia (blue-blind)

#10BABE

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aedd;
/* rgb */ color: rgb(102, 174, 221);
/* oklch */ color: oklch(72.2% 0.100 238.8);

Tailwind

colors: {
  custom: {
    50: '#99c6e7',
    500: '#66aedd',
    950: '#000000',
  },
}

SCSS

$custom: #66aedd;
$custom-light: #99c6e7;
$custom-dark: #000000;

JSON

{
  "hex": "#66aedd",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 221
  },
  "hsl": {
    "h": 203.697,
    "s": 63.636,
    "l": 63.333
  },
  "oklch": {
    "l": 0.72216,
    "c": 0.09979,
    "h": 238.8
  },
  "luminance": 0.38317
}

Semantic roles & 50–950 ramp

primary

#66AEDD

secondary

#E5CBBA

accent

#601ACB

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #66AEDD

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

Preview Lab → · Contrast checker → · Palette generator →