#66C8F2#66C8F2

#66C8F2 is a light, moderate cyan. Relative luminance 0.505; OKLCH L 79.0% C 0.110 H 228.5°. Best body text is #000000 at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#66C8F2
RGB	rgb(102, 200, 242)
HSL	hsl(198, 84%, 67%)
HSV	hsv(198, 58%, 95%)
CMYK	cmyk(57.9%, 17.4%, 0%, 5.1%)
CIE-LAB	lab(76.40, -16.97, -29.44)
CIE-LCH	lch(76.40, 33.98, 240.04°)
OKLab	oklab(78.95% -0.0726 -0.082)
OKLCH	oklch(78.95% 0.11 228.5)
XYZ	xyz(42.1546, 50.5401, 91.5209)
Luminance	0.5054 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8F2 #F29066

analogous

#66F2D6 #66C8F2 #6682F2

triadic

#66C8F2 #F266C8 #C8F266

tetradic

#66C8F2 #D666F2 #F29066 #82F266

square

#66C8F2 #D666F2 #F29066 #82F266

split-complementary

#66C8F2 #F26682 #F2D666

monochromatic

#1194CC #2EB4ED #66C8F2 #9EDCF7 #D7F1FC

Accessibility & contrast

On white

1.89

#66C8F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.11

#66C8F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F2

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8F2	#FFFFFF	#000000	##000000
##66C8F2	1.00	1.89	11.11	11.11
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.11	21.00	1.00	1.00
##000000	11.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C5F4

Deuteranopia (green-blind)

#9EB6F1

Tritanopia (blue-blind)

#00D4D6

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66c8f2;
/* rgb */ color: rgb(102, 200, 242);
/* oklch */ color: oklch(79.0% 0.110 228.5);

Tailwind

colors: {
  custom: {
    50: '#9dd8f6',
    500: '#66c8f2',
    950: '#000000',
  },
}

SCSS

$custom: #66c8f2;
$custom-light: #9dd8f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8f2",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 242
  },
  "hsl": {
    "h": 198,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.78952,
    "c": 0.10956,
    "h": 228.5
  },
  "luminance": 0.50544
}

Semantic roles & 50–950 ramp

primary

#66C8F2

secondary

#C96034

accent

#4705E1

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8F2

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

Preview Lab → · Contrast checker → · Palette generator →