#66AED9#66AED9

#66AED9 is a light, moderate cyan. Relative luminance 0.381; OKLCH L 72.0% C 0.096 H 236.4°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#66AED9
RGB	rgb(102, 174, 217)
HSL	hsl(202, 60%, 63%)
HSV	hsv(202, 53%, 85%)
CMYK	cmyk(53%, 19.8%, 0%, 14.9%)
CIE-LAB	lab(68.10, -10.59, -28.63)
CIE-LCH	lch(68.10, 30.53, 249.71°)
OKLab	oklab(72.04% -0.053 -0.0798)
OKLCH	oklch(72.04% 0.096 236.4)
XYZ	xyz(33.1353, 38.1038, 71.2408)
Luminance	0.3811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AED9 #D99166

analogous

#66D9CB #66AED9 #6674D9

triadic

#66AED9 #D966AE #AED966

tetradic

#66AED9 #CB66D9 #D99166 #74D966

square

#66AED9 #CB66D9 #D99166 #74D966

split-complementary

#66AED9 #D96674 #D9CB66

monochromatic

#27719D #3594CD #66AED9 #97C8E5 #C8E2F1

Accessibility & contrast

On white

2.44

#66AED9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#66AED9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AED9

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AED9	#FFFFFF	#000000	##000000
##66AED9	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AADDB

Deuteranopia (green-blind)

#8AA1D8

Tritanopia (blue-blind)

#1AB9BC

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aed9;
/* rgb */ color: rgb(102, 174, 217);
/* oklch */ color: oklch(72.0% 0.096 236.4);

Tailwind

colors: {
  custom: {
    50: '#99c6e5',
    500: '#66aed9',
    950: '#000000',
  },
}

SCSS

$custom: #66aed9;
$custom-light: #99c6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#66aed9",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 217
  },
  "hsl": {
    "h": 202.435,
    "s": 60.209,
    "l": 62.549
  },
  "oklch": {
    "l": 0.72042,
    "c": 0.09579,
    "h": 236.4
  },
  "luminance": 0.38107
}

Semantic roles & 50–950 ramp

primary

#66AED9

secondary

#E2C8B8

accent

#5D1EC8

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1315

muted

#7E8284

Preview Lab

Preview with #66AED9

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

Preview Lab → · Contrast checker → · Palette generator →