#66AEEF#66AEEF

#66AEEF is a light, moderate cyan. Relative luminance 0.393; OKLCH L 73.0% C 0.120 H 247.4°. Best body text is #000000 at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#66AEEF
RGB	rgb(102, 174, 239)
HSL	hsl(208, 81%, 67%)
HSV	hsv(208, 57%, 94%)
CMYK	cmyk(57.3%, 27.2%, 0%, 6.3%)
CIE-LAB	lab(68.99, -3.92, -39.29)
CIE-LCH	lch(68.99, 39.49, 264.30°)
OKLab	oklab(73.04% -0.0459 -0.1104)
OKLCH	oklch(73.04% 0.12 247.4)
XYZ	xyz(36.1899, 39.3257, 87.3281)
Luminance	0.3933 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEEF #EFA766

analogous

#66EFEB #66AEEF #666AEF

triadic

#66AEEF #EF66AE #AEEF66

tetradic

#66AEEF #EB66EF #EFA766 #6AEF66

square

#66AEEF #EB66EF #EFA766 #6AEF66

split-complementary

#66AEEF #EF666A #EFEB66

monochromatic

#1572C6 #2F91E9 #66AEEF #9DCBF5 #D5E9FB

Accessibility & contrast

On white

2.37

#66AEEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.87

#66AEEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEEF

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEEF	#FFFFFF	#000000	##000000
##66AEEF	1.00	2.37	8.87	8.87
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.87	21.00	1.00	1.00
##000000	8.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92B0F2

Deuteranopia (green-blind)

#80A2EE

Tritanopia (blue-blind)

#00BDC5

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66aeef;
/* rgb */ color: rgb(102, 174, 239);
/* oklch */ color: oklch(73.0% 0.120 247.4);

Tailwind

colors: {
  custom: {
    50: '#9bc6f4',
    500: '#66aeef',
    950: '#000000',
  },
}

SCSS

$custom: #66aeef;
$custom-light: #9bc6f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66aeef",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 239
  },
  "hsl": {
    "h": 208.467,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.73038,
    "c": 0.11957,
    "h": 247.4
  },
  "luminance": 0.39329
}

Semantic roles & 50–950 ramp

primary

#66AEEF

secondary

#EED7C2

accent

#6D08DD

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AEEF

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

Preview Lab → · Contrast checker → · Palette generator →