#66AEE4#66AEE4

#66AEE4 is a light, moderate cyan. Relative luminance 0.387; OKLCH L 72.5% C 0.107 H 242.6°. Best body text is #000000 at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#66AEE4
RGB	rgb(102, 174, 228)
HSL	hsl(206, 70%, 65%)
HSV	hsv(206, 55%, 89%)
CMYK	cmyk(55.3%, 23.7%, 0%, 10.6%)
CIE-LAB	lab(68.53, -7.29, -34.00)
CIE-LCH	lch(68.53, 34.77, 257.89°)
OKLab	oklab(72.53% -0.0493 -0.0951)
OKLCH	oklch(72.53% 0.107 242.6)
XYZ	xyz(34.6140, 38.6953, 79.0286)
Luminance	0.3870 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEE4 #E49C66

analogous

#66E4DB #66AEE4 #666FE4

triadic

#66AEE4 #E466AE #AEE466

tetradic

#66AEE4 #DB66E4 #E49C66 #6FE466

square

#66AEE4 #DB66E4 #E49C66 #6FE466

split-complementary

#66AEE4 #E4666F #E4DB66

monochromatic

#1F72B0 #3292DB #66AEE4 #9ACAED #CEE5F6

Accessibility & contrast

On white

2.40

#66AEE4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.74

#66AEE4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEE4

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEE4	#FFFFFF	#000000	##000000
##66AEE4	1.00	2.40	8.74	8.74
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.74	21.00	1.00	1.00
##000000	8.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96AEE7

Deuteranopia (green-blind)

#85A1E3

Tritanopia (blue-blind)

#00BBC0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66aee4;
/* rgb */ color: rgb(102, 174, 228);
/* oklch */ color: oklch(72.5% 0.107 242.6);

Tailwind

colors: {
  custom: {
    50: '#9ac6ec',
    500: '#66aee4',
    950: '#000000',
  },
}

SCSS

$custom: #66aee4;
$custom-light: #9ac6ec;
$custom-dark: #000000;

JSON

{
  "hex": "#66aee4",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 228
  },
  "hsl": {
    "h": 205.714,
    "s": 70,
    "l": 64.706
  },
  "oklch": {
    "l": 0.72528,
    "c": 0.10717,
    "h": 242.6
  },
  "luminance": 0.38698
}

Semantic roles & 50–950 ramp

primary

#66AEE4

secondary

#E9D0BD

accent

#6514D2

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #66AEE4

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

Preview Lab → · Contrast checker → · Palette generator →