#42DEFF#42DEFF

#42DEFF is a very light, vivid cyan. Relative luminance 0.606; OKLCH L 83.5% C 0.133 H 215.4°. Best body text is #000000 at 13.12:1 contrast (WCAG AA passes).

Color values

HEX	#42DEFF
RGB	rgb(66, 222, 255)
HSL	hsl(190, 100%, 63%)
HSV	hsv(190, 74%, 100%)
CMYK	cmyk(74.1%, 12.9%, 0%, 0%)
CIE-LAB	lab(82.17, -29.43, -27.60)
CIE-LCH	lch(82.17, 40.35, 223.17°)
OKLab	oklab(83.46% -0.1082 -0.077)
OKLCH	oklch(83.46% 0.133 215.4)
XYZ	xyz(46.4104, 60.6152, 103.8422)
Luminance	0.6062 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42DEFF #FF6342

analogous

#42FFC1 #42DEFF #427FFF

triadic

#42DEFF #FF42DE #DEFF42

tetradic

#42DEFF #C142FF #FF6342 #7FFF42

square

#42DEFF #C142FF #FF6342 #7FFF42

split-complementary

#42DEFF #FF427F #FFC142

monochromatic

#00A4C7 #05D3FF #42DEFF #7FE9FF #BCF3FF

Accessibility & contrast

On white

1.60

#42DEFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.12

#42DEFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42DEFF

13.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42DEFF	#FFFFFF	#000000	##000000
##42DEFF	1.00	1.60	13.12	13.12
#FFFFFF	1.60	1.00	21.00	21.00
#000000	13.12	21.00	1.00	1.00
##000000	13.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7D7FF

Deuteranopia (green-blind)

#AEC4FF

Tritanopia (blue-blind)

#00EAE8

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #42deff;
/* rgb */ color: rgb(66, 222, 255);
/* oklch */ color: oklch(83.5% 0.133 215.4);

Tailwind

colors: {
  custom: {
    50: '#91e8ff',
    500: '#42deff',
    950: '#000000',
  },
}

SCSS

$custom: #42deff;
$custom-light: #91e8ff;
$custom-dark: #000000;

JSON

{
  "hex": "#42deff",
  "rgb": {
    "r": 66,
    "g": 222,
    "b": 255
  },
  "hsl": {
    "h": 190.476,
    "s": 100,
    "l": 62.941
  },
  "oklch": {
    "l": 0.8346,
    "c": 0.1328,
    "h": 215.4
  },
  "luminance": 0.60621
}

Semantic roles & 50–950 ramp

primary

#42DEFF

secondary

#C33E22

accent

#2800E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1618

muted

#808486

Preview Lab

Preview with #42DEFF

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

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