#42C7EA#42C7EA

#42C7EA is a light, vivid cyan. Relative luminance 0.479; OKLCH L 77.3% C 0.122 H 219.3°. Best body text is #000000 at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#42C7EA
RGB	rgb(66, 199, 234)
HSL	hsl(193, 80%, 59%)
HSV	hsv(193, 72%, 92%)
CMYK	cmyk(71.8%, 15%, 0%, 8.2%)
CIE-LAB	lab(74.79, -24.56, -27.70)
CIE-LCH	lch(74.79, 37.02, 228.44°)
OKLab	oklab(77.28% -0.0945 -0.0773)
OKLCH	oklch(77.28% 0.122 219.3)
XYZ	xyz(37.5153, 47.9412, 85.1024)
Luminance	0.4795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C7EA #EA6542

analogous

#42EAB9 #42C7EA #4273EA

triadic

#42C7EA #EA42C7 #C7EA42

tetradic

#42C7EA #B942EA #EA6542 #73EA42

square

#42C7EA #B942EA #EA6542 #73EA42

split-complementary

#42C7EA #EA4273 #EAB942

monochromatic

#1282A0 #18AFD7 #42C7EA #79D7F0 #B0E8F6

Accessibility & contrast

On white

1.98

#42C7EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.59

#42C7EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C7EA

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C7EA	#FFFFFF	#000000	##000000
##42C7EA	1.00	1.98	10.59	10.59
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.59	21.00	1.00	1.00
##000000	10.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C2EC

Deuteranopia (green-blind)

#9AB1EA

Tritanopia (blue-blind)

#00D3D2

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #42c7ea;
/* rgb */ color: rgb(66, 199, 234);
/* oklch */ color: oklch(77.3% 0.122 219.3);

Tailwind

colors: {
  custom: {
    50: '#8cd8f0',
    500: '#42c7ea',
    950: '#000000',
  },
}

SCSS

$custom: #42c7ea;
$custom-light: #8cd8f0;
$custom-dark: #000000;

JSON

{
  "hex": "#42c7ea",
  "rgb": {
    "r": 66,
    "g": 199,
    "b": 234
  },
  "hsl": {
    "h": 192.5,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.77275,
    "c": 0.1221,
    "h": 219.3
  },
  "luminance": 0.47946
}

Semantic roles & 50–950 ramp

primary

#42C7EA

secondary

#E5B1A3

accent

#5A31F6

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #42C7EA

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

Preview Lab → · Contrast checker → · Palette generator →