#42C6E8#42C6E8

#42C6E8 is a light, vivid cyan. Relative luminance 0.474; OKLCH L 77.0% C 0.121 H 218.8°. Best body text is #000000 at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#42C6E8
RGB	rgb(66, 198, 232)
HSL	hsl(192, 78%, 58%)
HSV	hsv(192, 72%, 91%)
CMYK	cmyk(71.6%, 14.7%, 0%, 9%)
CIE-LAB	lab(74.42, -24.68, -27.18)
CIE-LCH	lch(74.42, 36.71, 227.76°)
OKLab	oklab(76.96% -0.0943 -0.0759)
OKLCH	oklch(76.96% 0.121 218.8)
XYZ	xyz(37.0003, 47.3683, 83.5212)
Luminance	0.4737 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42C6E8 #E86442

analogous

#42E8B7 #42C6E8 #4273E8

triadic

#42C6E8 #E842C6 #C6E842

tetradic

#42C6E8 #B742E8 #E86442 #73E842

square

#42C6E8 #B742E8 #E86442 #73E842

split-complementary

#42C6E8 #E84273 #E8B742

monochromatic

#13809D #1AADD3 #42C6E8 #79D6EF #AFE7F5

Accessibility & contrast

On white

2.00

#42C6E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.47

#42C6E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42C6E8

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42C6E8	#FFFFFF	#000000	##000000
##42C6E8	1.00	2.00	10.47	10.47
#FFFFFF	2.00	1.00	21.00	21.00
#000000	10.47	21.00	1.00	1.00
##000000	10.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C1EA

Deuteranopia (green-blind)

#9AB0E8

Tritanopia (blue-blind)

#00D1D1

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #42c6e8;
/* rgb */ color: rgb(66, 198, 232);
/* oklch */ color: oklch(77.0% 0.121 218.8);

Tailwind

colors: {
  custom: {
    50: '#8cd7ef',
    500: '#42c6e8',
    950: '#000000',
  },
}

SCSS

$custom: #42c6e8;
$custom-light: #8cd7ef;
$custom-dark: #000000;

JSON

{
  "hex": "#42c6e8",
  "rgb": {
    "r": 66,
    "g": 198,
    "b": 232
  },
  "hsl": {
    "h": 192.289,
    "s": 78.302,
    "l": 58.431
  },
  "oklch": {
    "l": 0.76959,
    "c": 0.121,
    "h": 218.8
  },
  "luminance": 0.47373
}

Semantic roles & 50–950 ramp

primary

#42C6E8

secondary

#E4AFA2

accent

#5B33F5

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #42C6E8

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

Preview Lab → · Contrast checker → · Palette generator →