#66D8F2#66D8F2

#66D8F2 is a very light, moderate cyan. Relative luminance 0.583; OKLCH L 82.6% C 0.109 H 214.9°. Best body text is #000000 at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#66D8F2
RGB	rgb(102, 216, 242)
HSL	hsl(191, 84%, 67%)
HSV	hsv(191, 58%, 95%)
CMYK	cmyk(57.9%, 10.7%, 0%, 5.1%)
CIE-LAB	lab(80.93, -25.08, -22.52)
CIE-LCH	lch(80.93, 33.70, 221.93°)
OKLab	oklab(82.57% -0.0894 -0.0625)
OKLCH	oklch(82.57% 0.109 214.9)
XYZ	xyz(46.0559, 58.3428, 92.8213)
Luminance	0.5835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D8F2 #F28066

analogous

#66F2C6 #66D8F2 #6692F2

triadic

#66D8F2 #F266D8 #D8F266

tetradic

#66D8F2 #C666F2 #F28066 #92F266

square

#66D8F2 #C666F2 #F28066 #92F266

split-complementary

#66D8F2 #F26692 #F2C666

monochromatic

#11AACC #2ECAED #66D8F2 #9EE6F7 #D7F5FC

Accessibility & contrast

On white

1.66

#66D8F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.67

#66D8F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D8F2

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D8F2	#FFFFFF	#000000	##000000
##66D8F2	1.00	1.66	12.67	12.67
#FFFFFF	1.66	1.00	21.00	21.00
#000000	12.67	21.00	1.00	1.00
##000000	12.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5D2F4

Deuteranopia (green-blind)

#B1C2F2

Tritanopia (blue-blind)

#00E2E0

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #66d8f2;
/* rgb */ color: rgb(102, 216, 242);
/* oklch */ color: oklch(82.6% 0.109 214.9);

Tailwind

colors: {
  custom: {
    50: '#9de4f6',
    500: '#66d8f2',
    950: '#000000',
  },
}

SCSS

$custom: #66d8f2;
$custom-light: #9de4f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66d8f2",
  "rgb": {
    "r": 102,
    "g": 216,
    "b": 242
  },
  "hsl": {
    "h": 191.143,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.82574,
    "c": 0.1091,
    "h": 214.9
  },
  "luminance": 0.58347
}

Semantic roles & 50–950 ramp

primary

#66D8F2

secondary

#C94F34

accent

#2E05E1

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #66D8F2

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

Preview Lab → · Contrast checker → · Palette generator →