#66AAEF#66AAEF

#66AAEF is a light, vivid cyan. Relative luminance 0.378; OKLCH L 72.2% C 0.123 H 250.2°. Best body text is #000000 at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#66AAEF
RGB	rgb(102, 170, 239)
HSL	hsl(210, 81%, 67%)
HSV	hsv(210, 57%, 94%)
CMYK	cmyk(57.3%, 28.9%, 0%, 6.3%)
CIE-LAB	lab(67.88, -1.69, -41.03)
CIE-LCH	lch(67.88, 41.06, 267.64°)
OKLab	oklab(72.16% -0.0416 -0.1155)
OKLCH	oklch(72.16% 0.123 250.2)
XYZ	xyz(35.4286, 37.8031, 87.0743)
Luminance	0.3781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AAEF #EFAB66

analogous

#66EFEF #66AAEF #6766EF

triadic

#66AAEF #EF66AA #AAEF66

tetradic

#66AAEF #EF66EF #EFAB66 #66EF67

square

#66AAEF #EF66EF #EFAB66 #66EF67

split-complementary

#66AAEF #EF6766 #EFEF66

monochromatic

#156DC6 #2F8BE9 #66AAEF #9DC9F5 #D5E8FB

Accessibility & contrast

On white

2.45

#66AAEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.56

#66AAEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAEF

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AAEF	#FFFFFF	#000000	##000000
##66AAEF	1.00	2.45	8.56	8.56
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.56	21.00	1.00	1.00
##000000	8.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DADF2

Deuteranopia (green-blind)

#7B9FEE

Tritanopia (blue-blind)

#00BAC2

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66aaef;
/* rgb */ color: rgb(102, 170, 239);
/* oklch */ color: oklch(72.2% 0.123 250.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#66aaef",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 239
  },
  "hsl": {
    "h": 210.219,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.72164,
    "c": 0.12272,
    "h": 250.2
  },
  "luminance": 0.37806
}

Semantic roles & 50–950 ramp

primary

#66AAEF

secondary

#EED9C2

accent

#7408DD

background

#FAFBFE

surface

#F4F7FD

border

#CED0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AAEF

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

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