#66AEF0#66AEF0

#66AEF0 is a light, vivid cyan. Relative luminance 0.394; OKLCH L 73.1% C 0.121 H 247.8°. Best body text is #000000 at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#66AEF0
RGB	rgb(102, 174, 240)
HSL	hsl(209, 82%, 67%)
HSV	hsv(209, 58%, 94%)
CMYK	cmyk(57.5%, 27.5%, 0%, 5.9%)
CIE-LAB	lab(69.03, -3.61, -39.77)
CIE-LCH	lch(69.03, 39.93, 264.81°)
OKLab	oklab(73.09% -0.0456 -0.1118)
OKLCH	oklch(73.09% 0.121 247.8)
XYZ	xyz(36.3380, 39.3849, 88.1083)
Luminance	0.3939 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEF0 #F0A866

analogous

#66F0ED #66AEF0 #6669F0

triadic

#66AEF0 #F066AE #AEF066

tetradic

#66AEF0 #ED66F0 #F0A866 #69F066

square

#66AEF0 #ED66F0 #F0A866 #69F066

split-complementary

#66AEF0 #F06669 #F0ED66

monochromatic

#1472C8 #2E90EB #66AEF0 #9ECCF5 #D5E9FB

Accessibility & contrast

On white

2.37

#66AEF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.88

#66AEF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEF0

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEF0	#FFFFFF	#000000	##000000
##66AEF0	1.00	2.37	8.88	8.88
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.88	21.00	1.00	1.00
##000000	8.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92B0F3

Deuteranopia (green-blind)

#80A2EF

Tritanopia (blue-blind)

#00BEC5

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66aef0;
/* rgb */ color: rgb(102, 174, 240);
/* oklch */ color: oklch(73.1% 0.121 247.8);

Tailwind

colors: {
  custom: {
    50: '#9bc5f5',
    500: '#66aef0',
    950: '#000000',
  },
}

SCSS

$custom: #66aef0;
$custom-light: #9bc5f5;
$custom-dark: #000000;

JSON

{
  "hex": "#66aef0",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 240
  },
  "hsl": {
    "h": 208.696,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.73086,
    "c": 0.12073,
    "h": 247.8
  },
  "luminance": 0.39388
}

Semantic roles & 50–950 ramp

primary

#66AEF0

secondary

#EFD8C3

accent

#6E07DF

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AEF0

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

Preview Lab → · Contrast checker → · Palette generator →