#42C4EA#42C4EA

#42C4EA is a light, vivid cyan. Relative luminance 0.466; OKLCH L 76.6% C 0.122 H 221.5°. Best body text is #000000 at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#42C4EA
RGB	rgb(66, 196, 234)
HSL	hsl(194, 80%, 59%)
HSV	hsv(194, 72%, 92%)
CMYK	cmyk(71.8%, 16.2%, 0%, 8.2%)
CIE-LAB	lab(73.92, -23.04, -29.04)
CIE-LCH	lch(73.92, 37.07, 231.56°)
OKLab	oklab(76.58% -0.0916 -0.0812)
OKLCH	oklch(76.58% 0.122 221.5)
XYZ	xyz(36.8318, 46.5743, 84.8745)
Luminance	0.4658 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C4EA #EA6842

analogous

#42EABC #42C4EA #4270EA

triadic

#42C4EA #EA42C4 #C4EA42

tetradic

#42C4EA #BC42EA #EA6842 #70EA42

square

#42C4EA #BC42EA #EA6842 #70EA42

split-complementary

#42C4EA #EA4270 #EABC42

monochromatic

#1280A0 #18ACD7 #42C4EA #79D5F0 #B0E6F6

Accessibility & contrast

On white

2.04

#42C4EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.32

#42C4EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C4EA

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C4EA	#FFFFFF	#000000	##000000
##42C4EA	1.00	2.04	10.32	10.32
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.32	21.00	1.00	1.00
##000000	10.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEBFEC

Deuteranopia (green-blind)

#97AEEA

Tritanopia (blue-blind)

#00D0D0

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #42c4ea;
/* rgb */ color: rgb(66, 196, 234);
/* oklch */ color: oklch(76.6% 0.122 221.5);

Tailwind

colors: {
  custom: {
    50: '#8cd6f0',
    500: '#42c4ea',
    950: '#000000',
  },
}

SCSS

$custom: #42c4ea;
$custom-light: #8cd6f0;
$custom-dark: #000000;

JSON

{
  "hex": "#42c4ea",
  "rgb": {
    "r": 66,
    "g": 196,
    "b": 234
  },
  "hsl": {
    "h": 193.571,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.76576,
    "c": 0.12238,
    "h": 221.5
  },
  "luminance": 0.46579
}

Semantic roles & 50–950 ramp

primary

#42C4EA

secondary

#E5B2A3

accent

#5E31F6

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #42C4EA

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

Preview Lab → · Contrast checker → · Palette generator →