#42CDEA#42CDEA

#42CDEA is a light, vivid cyan. Relative luminance 0.508; OKLCH L 78.7% C 0.122 H 214.8°. Best body text is #000000 at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#42CDEA
RGB	rgb(66, 205, 234)
HSL	hsl(190, 80%, 59%)
HSV	hsv(190, 72%, 92%)
CMYK	cmyk(71.8%, 12.4%, 0%, 8.2%)
CIE-LAB	lab(76.53, -27.54, -25.03)
CIE-LCH	lch(76.53, 37.22, 222.26°)
OKLab	oklab(78.68% -0.1002 -0.0698)
OKLCH	oklch(78.68% 0.122 214.8)
XYZ	xyz(38.9231, 50.7568, 85.5716)
Luminance	0.5076 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42CDEA #EA5F42

analogous

#42EAB3 #42CDEA #4279EA

triadic

#42CDEA #EA42CD #CDEA42

tetradic

#42CDEA #B342EA #EA5F42 #79EA42

square

#42CDEA #B342EA #EA5F42 #79EA42

split-complementary

#42CDEA #EA4279 #EAB342

monochromatic

#1287A0 #18B6D7 #42CDEA #79DCF0 #B0EAF6

Accessibility & contrast

On white

1.88

#42CDEA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.15

#42CDEA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42CDEA

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42CDEA	#FFFFFF	#000000	##000000
##42CDEA	1.00	1.88	11.15	11.15
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.15	21.00	1.00	1.00
##000000	11.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9C6EC

Deuteranopia (green-blind)

#A1B5EA

Tritanopia (blue-blind)

#00D8D6

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #42cdea;
/* rgb */ color: rgb(66, 205, 234);
/* oklch */ color: oklch(78.7% 0.122 214.8);

Tailwind

colors: {
  custom: {
    50: '#8ddcf0',
    500: '#42cdea',
    950: '#000000',
  },
}

SCSS

$custom: #42cdea;
$custom-light: #8ddcf0;
$custom-dark: #000000;

JSON

{
  "hex": "#42cdea",
  "rgb": {
    "r": 66,
    "g": 205,
    "b": 234
  },
  "hsl": {
    "h": 190.357,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.78677,
    "c": 0.12211,
    "h": 214.8
  },
  "luminance": 0.50761
}

Semantic roles & 50–950 ramp

primary

#42CDEA

secondary

#A2422E

accent

#5331F6

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #42CDEA

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

Preview Lab → · Contrast checker → · Palette generator →