#66A6EE#66A6EE

#66A6EE is a light, vivid cyan. Relative luminance 0.363; OKLCH L 71.2% C 0.125 H 252.5°. Best body text is #000000 at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#66A6EE
RGB	rgb(102, 166, 238)
HSL	hsl(212, 80%, 67%)
HSV	hsv(212, 57%, 93%)
CMYK	cmyk(57.1%, 30.3%, 0%, 6.7%)
CIE-LAB	lab(66.72, 0.25, -42.28)
CIE-LCH	lch(66.72, 42.29, 270.34°)
OKLab	oklab(71.25% -0.0376 -0.1191)
OKLCH	oklch(71.25% 0.125 252.5)
XYZ	xyz(34.5428, 36.2673, 86.0523)
Luminance	0.3627 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A6EE #EEAE66

analogous

#66EAEE #66A6EE #6A66EE

triadic

#66A6EE #EE66A6 #A6EE66

tetradic

#66A6EE #EE66EA #EEAE66 #66EE6A

square

#66A6EE #EE66EA #EEAE66 #66EE6A

split-complementary

#66A6EE #EE6A66 #EAEE66

monochromatic

#1668C4 #2F86E8 #66A6EE #9DC6F4 #D4E6FA

Accessibility & contrast

On white

2.54

#66A6EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.25

#66A6EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A6EE

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A6EE	#FFFFFF	#000000	##000000
##66A6EE	1.00	2.54	8.25	8.25
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.25	21.00	1.00	1.00
##000000	8.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88AAF1

Deuteranopia (green-blind)

#769CED

Tritanopia (blue-blind)

#00B7C0

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a6ee;
/* rgb */ color: rgb(102, 166, 238);
/* oklch */ color: oklch(71.2% 0.125 252.5);

Tailwind

colors: {
  custom: {
    50: '#9bc0f4',
    500: '#66a6ee',
    950: '#000000',
  },
}

SCSS

$custom: #66a6ee;
$custom-light: #9bc0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66a6ee",
  "rgb": {
    "r": 102,
    "g": 166,
    "b": 238
  },
  "hsl": {
    "h": 211.765,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.71246,
    "c": 0.12492,
    "h": 252.5
  },
  "luminance": 0.3627
}

Semantic roles & 50–950 ramp

primary

#66A6EE

secondary

#EED9C2

accent

#7909DC

background

#FAFBFE

surface

#F3F7FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A6EE

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

Preview Lab → · Contrast checker → · Palette generator →