#66C3F2#66C3F2

#66C3F2 is a light, moderate cyan. Relative luminance 0.483; OKLCH L 77.8% C 0.111 H 232.7°. Best body text is #000000 at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#66C3F2
RGB	rgb(102, 195, 242)
HSL	hsl(200, 84%, 67%)
HSV	hsv(200, 58%, 95%)
CMYK	cmyk(57.9%, 19.4%, 0%, 5.1%)
CIE-LAB	lab(74.99, -14.36, -31.61)
CIE-LCH	lch(74.99, 34.72, 245.57°)
OKLab	oklab(77.83% -0.0673 -0.0882)
OKLCH	oklch(77.83% 0.111 232.7)
XYZ	xyz(41.0155, 48.2619, 91.1412)
Luminance	0.4827 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C3F2 #F29566

analogous

#66F2DB #66C3F2 #667DF2

triadic

#66C3F2 #F266C3 #C3F266

tetradic

#66C3F2 #DB66F2 #F29566 #7DF266

square

#66C3F2 #DB66F2 #F29566 #7DF266

split-complementary

#66C3F2 #F2667D #F2DB66

monochromatic

#118ECC #2EADED #66C3F2 #9ED9F7 #D7EFFC

Accessibility & contrast

On white

1.97

#66C3F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.65

#66C3F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C3F2

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C3F2	#FFFFFF	#000000	##000000
##66C3F2	1.00	1.97	10.65	10.65
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.65	21.00	1.00	1.00
##000000	10.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACC1F4

Deuteranopia (green-blind)

#98B2F1

Tritanopia (blue-blind)

#00D0D2

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #66c3f2;
/* rgb */ color: rgb(102, 195, 242);
/* oklch */ color: oklch(77.8% 0.111 232.7);

Tailwind

colors: {
  custom: {
    50: '#9cd5f6',
    500: '#66c3f2',
    950: '#000000',
  },
}

SCSS

$custom: #66c3f2;
$custom-light: #9cd5f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66c3f2",
  "rgb": {
    "r": 102,
    "g": 195,
    "b": 242
  },
  "hsl": {
    "h": 200.143,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.7783,
    "c": 0.11099,
    "h": 232.7
  },
  "luminance": 0.48266
}

Semantic roles & 50–950 ramp

primary

#66C3F2

secondary

#F0D3C4

accent

#4F05E1

background

#FAFDFF

surface

#F4FAFE

border

#CED3D6

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #66C3F2

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

Preview Lab → · Contrast checker → · Palette generator →