#66AFEF#66AFEF

#66AFEF is a light, moderate cyan. Relative luminance 0.397; OKLCH L 73.3% C 0.119 H 246.7°. Best body text is #000000 at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#66AFEF
RGB	rgb(102, 175, 239)
HSL	hsl(208, 81%, 67%)
HSV	hsv(208, 57%, 94%)
CMYK	cmyk(57.3%, 26.8%, 0%, 6.3%)
CIE-LAB	lab(69.27, -4.48, -38.86)
CIE-LCH	lch(69.27, 39.12, 263.43°)
OKLab	oklab(73.26% -0.0469 -0.1092)
OKLCH	oklch(73.26% 0.119 246.7)
XYZ	xyz(36.3838, 39.7135, 87.3927)
Luminance	0.3972 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AFEF #EFA666

analogous

#66EFEA #66AFEF #666BEF

triadic

#66AFEF #EF66AF #AFEF66

tetradic

#66AFEF #EA66EF #EFA666 #6BEF66

square

#66AFEF #EA66EF #EFA666 #6BEF66

split-complementary

#66AFEF #EF666B #EFEA66

monochromatic

#1573C6 #2F92E9 #66AFEF #9DCCF5 #D5E9FB

Accessibility & contrast

On white

2.35

#66AFEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.94

#66AFEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AFEF

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AFEF	#FFFFFF	#000000	##000000
##66AFEF	1.00	2.35	8.94	8.94
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.94	21.00	1.00	1.00
##000000	8.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94B1F2

Deuteranopia (green-blind)

#81A3EE

Tritanopia (blue-blind)

#00BEC5

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66afef;
/* rgb */ color: rgb(102, 175, 239);
/* oklch */ color: oklch(73.3% 0.119 246.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#66afef",
  "rgb": {
    "r": 102,
    "g": 175,
    "b": 239
  },
  "hsl": {
    "h": 208.029,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.73258,
    "c": 0.11883,
    "h": 246.7
  },
  "luminance": 0.39717
}

Semantic roles & 50–950 ramp

primary

#66AFEF

secondary

#EED7C2

accent

#6C08DD

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66AFEF

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

Preview Lab → · Contrast checker → · Palette generator →