#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
RGBrgb(66, 198, 232)
HSLhsl(192, 78%, 58%)
HSVhsv(192, 72%, 91%)
CMYKcmyk(71.6%, 14.7%, 0%, 9%)
CIE-LABlab(74.42, -24.68, -27.18)
CIE-LCHlch(74.42, 36.71, 227.76°)
OKLaboklab(76.96% -0.0943 -0.0759)
OKLCHoklch(76.96% 0.121 218.8)
XYZxyz(37.0003, 47.3683, 83.5212)
Luminance0.4737 (WCAG relative)
Temperaturecool
Familycyan

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
##42C6E81.002.0010.4710.47
#FFFFFF2.001.0021.0021.00
#00000010.4721.001.001.00
##00000010.4721.001.001.00

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 →

#42C6E8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva