#66AEF2#66AEF2

#66AEF2 is a light, vivid cyan. Relative luminance 0.395; OKLCH L 73.2% C 0.123 H 248.6°. Best body text is #000000 at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#66AEF2
RGB	rgb(102, 174, 242)
HSL	hsl(209, 84%, 67%)
HSV	hsv(209, 58%, 95%)
CMYK	cmyk(57.9%, 28.1%, 0%, 5.1%)
CIE-LAB	lab(69.12, -2.99, -40.73)
CIE-LCH	lch(69.12, 40.84, 265.80°)
OKLab	oklab(73.18% -0.045 -0.1146)
OKLCH	oklch(73.18% 0.123 248.6)
XYZ	xyz(36.6367, 39.5044, 89.6816)
Luminance	0.3951 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEF2 #F2AA66

analogous

#66F2F0 #66AEF2 #6668F2

triadic

#66AEF2 #F266AE #AEF266

tetradic

#66AEF2 #F066F2 #F2AA66 #68F266

square

#66AEF2 #F066F2 #F2AA66 #68F266

split-complementary

#66AEF2 #F26668 #F2F066

monochromatic

#1171CC #2E90ED #66AEF2 #9ECCF7 #D7EAFC

Accessibility & contrast

On white

2.36

#66AEF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.90

#66AEF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEF2

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEF2	#FFFFFF	#000000	##000000
##66AEF2	1.00	2.36	8.90	8.90
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.90	21.00	1.00	1.00
##000000	8.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91B0F5

Deuteranopia (green-blind)

#7FA3F1

Tritanopia (blue-blind)

#00BEC6

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66aef2;
/* rgb */ color: rgb(102, 174, 242);
/* oklch */ color: oklch(73.2% 0.123 248.6);

Tailwind

colors: {
  custom: {
    50: '#9cc5f6',
    500: '#66aef2',
    950: '#000000',
  },
}

SCSS

$custom: #66aef2;
$custom-light: #9cc5f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66aef2",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 242
  },
  "hsl": {
    "h": 209.143,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.73182,
    "c": 0.12308,
    "h": 248.6
  },
  "luminance": 0.39508
}

Semantic roles & 50–950 ramp

primary

#66AEF2

secondary

#F0D9C4

accent

#7005E1

background

#FAFCFF

surface

#F4F8FE

border

#CED1D6

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AEF2

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

Preview Lab → · Contrast checker → · Palette generator →