#66ACE0#66ACE0

#66ACE0 is a light, moderate cyan. Relative luminance 0.377; OKLCH L 71.9% C 0.104 H 242.3°. Best body text is #000000 at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#66ACE0
RGB	rgb(102, 172, 224)
HSL	hsl(206, 66%, 64%)
HSV	hsv(206, 54%, 88%)
CMYK	cmyk(54.5%, 23.2%, 0%, 12.2%)
CIE-LAB	lab(67.81, -7.41, -32.93)
CIE-LCH	lch(67.81, 33.75, 257.32°)
OKLab	oklab(71.9% -0.0484 -0.0921)
OKLCH	oklch(71.9% 0.104 242.3)
XYZ	xyz(33.6817, 37.7088, 76.0101)
Luminance	0.3771 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ACE0 #E09A66

analogous

#66E0D7 #66ACE0 #666FE0

triadic

#66ACE0 #E066AC #ACE066

tetradic

#66ACE0 #D766E0 #E09A66 #6FE066

square

#66ACE0 #D766E0 #E09A66 #6FE066

split-complementary

#66ACE0 #E0666F #E0D766

monochromatic

#2270A9 #3390D6 #66ACE0 #99C8EA #CCE3F5

Accessibility & contrast

On white

2.46

#66ACE0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.54

#66ACE0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ACE0

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ACE0	#FFFFFF	#000000	##000000
##66ACE0	1.00	2.46	8.54	8.54
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.54	21.00	1.00	1.00
##000000	8.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95ACE2

Deuteranopia (green-blind)

#85A0DF

Tritanopia (blue-blind)

#06B9BE

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66ace0;
/* rgb */ color: rgb(102, 172, 224);
/* oklch */ color: oklch(71.9% 0.104 242.3);

Tailwind

colors: {
  custom: {
    50: '#9ac4ea',
    500: '#66ace0',
    950: '#000000',
  },
}

SCSS

$custom: #66ace0;
$custom-light: #9ac4ea;
$custom-dark: #000000;

JSON

{
  "hex": "#66ace0",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 224
  },
  "hsl": {
    "h": 205.574,
    "s": 66.304,
    "l": 63.922
  },
  "oklch": {
    "l": 0.71902,
    "c": 0.10403,
    "h": 242.3
  },
  "luminance": 0.37712
}

Semantic roles & 50–950 ramp

primary

#66ACE0

secondary

#E6CEBC

accent

#6517CE

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #66ACE0

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

Preview Lab → · Contrast checker → · Palette generator →