#66CCF4#66CCF4

#66CCF4 is a light, moderate cyan. Relative luminance 0.525; OKLCH L 79.9% C 0.110 H 226.4°. Best body text is #000000 at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#66CCF4
RGB	rgb(102, 204, 244)
HSL	hsl(197, 87%, 68%)
HSV	hsv(197, 58%, 96%)
CMYK	cmyk(58.2%, 16.4%, 0%, 4.3%)
CIE-LAB	lab(77.60, -18.45, -28.67)
CIE-LCH	lch(77.60, 34.09, 237.24°)
OKLab	oklab(79.94% -0.0761 -0.0798)
OKLCH	oklch(79.94% 0.11 226.4)
XYZ	xyz(43.3951, 52.5380, 93.4243)
Luminance	0.5254 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CCF4 #F48E66

analogous

#66F4D5 #66CCF4 #6685F4

triadic

#66CCF4 #F466CC #CCF466

tetradic

#66CCF4 #D566F4 #F48E66 #85F466

square

#66CCF4 #D566F4 #F48E66 #85F466

split-complementary

#66CCF4 #F46685 #F4D566

monochromatic

#0F9AD1 #2DB9F0 #66CCF4 #9FDFF8 #D8F2FC

Accessibility & contrast

On white

1.82

#66CCF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.51

#66CCF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CCF4

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CCF4	#FFFFFF	#000000	##000000
##66CCF4	1.00	1.82	11.51	11.51
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.51	21.00	1.00	1.00
##000000	11.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6C8F6

Deuteranopia (green-blind)

#A2B9F4

Tritanopia (blue-blind)

#00D8D9

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66ccf4;
/* rgb */ color: rgb(102, 204, 244);
/* oklch */ color: oklch(79.9% 0.110 226.4);

Tailwind

colors: {
  custom: {
    50: '#9ddbf7',
    500: '#66ccf4',
    950: '#000000',
  },
}

SCSS

$custom: #66ccf4;
$custom-light: #9ddbf7;
$custom-dark: #000000;

JSON

{
  "hex": "#66ccf4",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 244
  },
  "hsl": {
    "h": 196.901,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.79935,
    "c": 0.11032,
    "h": 226.4
  },
  "luminance": 0.52542
}

Semantic roles & 50–950 ramp

primary

#66CCF4

secondary

#CC5D32

accent

#4202E3

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CCF4

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

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