#66AAEE#66AAEE

#66AAEE is a light, vivid cyan. Relative luminance 0.377; OKLCH L 72.1% C 0.122 H 249.8°. Best body text is #000000 at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#66AAEE
RGB	rgb(102, 170, 238)
HSL	hsl(210, 80%, 67%)
HSV	hsv(210, 57%, 93%)
CMYK	cmyk(57.1%, 28.6%, 0%, 6.7%)
CIE-LAB	lab(67.83, -2.00, -40.55)
CIE-LCH	lch(67.83, 40.60, 267.17°)
OKLab	oklab(72.11% -0.0419 -0.1141)
OKLCH	oklch(72.11% 0.122 249.8)
XYZ	xyz(35.2813, 37.7442, 86.2984)
Luminance	0.3775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AAEE #EEAA66

analogous

#66EEEE #66AAEE #6666EE

triadic

#66AAEE #EE66AA #AAEE66

tetradic

#66AAEE #EE66EE #EEAA66 #66EE66

square

#66AAEE #EE66EE #EEAA66 #66EE66

split-complementary

#66AAEE #EE6666 #EEEE66

monochromatic

#166DC4 #2F8BE8 #66AAEE #9DC9F4 #D4E7FA

Accessibility & contrast

On white

2.46

#66AAEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.55

#66AAEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAEE

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AAEE	#FFFFFF	#000000	##000000
##66AAEE	1.00	2.46	8.55	8.55
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.55	21.00	1.00	1.00
##000000	8.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DADF1

Deuteranopia (green-blind)

#7C9FED

Tritanopia (blue-blind)

#00BAC2

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66aaee;
/* rgb */ color: rgb(102, 170, 238);
/* oklch */ color: oklch(72.1% 0.122 249.8);

Tailwind

colors: {
  custom: {
    50: '#9bc3f4',
    500: '#66aaee',
    950: '#000000',
  },
}

SCSS

$custom: #66aaee;
$custom-light: #9bc3f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66aaee",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 238
  },
  "hsl": {
    "h": 210,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.72115,
    "c": 0.12153,
    "h": 249.8
  },
  "luminance": 0.37747
}

Semantic roles & 50–950 ramp

primary

#66AAEE

secondary

#EED8C2

accent

#7309DC

background

#FAFBFE

surface

#F3F7FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AAEE

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

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