#42B0E1#42B0E1

#42B0E1 is a light, vivid cyan. Relative luminance 0.376; OKLCH L 71.5% C 0.121 H 231.4°. Best body text is #000000 at 8.53:1 contrast (WCAG AA passes).

Color values

HEX#42B0E1
RGBrgb(66, 176, 225)
HSLhsl(198, 73%, 57%)
HSVhsv(198, 71%, 88%)
CMYKcmyk(70.7%, 21.8%, 0%, 11.8%)
CIE-LABlab(67.76, -15.52, -33.65)
CIE-LCHlch(67.76, 37.06, 245.23°)
OKLaboklab(71.53% -0.0756 -0.0945)
OKLCHoklch(71.53% 0.121 231.4)
XYZxyz(31.3573, 37.6416, 76.8325)
Luminance0.3765 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42B0E1 #E17342
analogous
#42E1C3 #42B0E1 #4260E1
triadic
#42B0E1 #E142B0 #B0E142
tetradic
#42B0E1 #C342E1 #E17342 #60E142
square
#42B0E1 #C342E1 #E17342 #60E142
split-complementary
#42B0E1 #E14260 #E1C342
monochromatic
#176C92 #1F93C6 #42B0E1 #77C6E9 #ACDCF2

Accessibility & contrast

On white

2.46
#42B0E1 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.53
#42B0E1 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B0E1
8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42B0E1#FFFFFF#000000##000000
##42B0E11.002.468.538.53
#FFFFFF2.461.0021.0021.00
#0000008.5321.001.001.00
##0000008.5321.001.001.00

Color blindness preview

Protanopia (red-blind)
#97AEE3
Deuteranopia (green-blind)
#829EE0
Tritanopia (blue-blind)
#00BDC0
Achromatopsia (no color)
#A5A5A5

Design tokens & code

CSS
--color: #42b0e1;
/* rgb */ color: rgb(66, 176, 225);
/* oklch */ color: oklch(71.5% 0.121 231.4);
Tailwind
colors: {
  custom: {
    50: '#8ac7ea',
    500: '#42b0e1',
    950: '#000000',
  },
}
SCSS
$custom: #42b0e1;
$custom-light: #8ac7ea;
$custom-dark: #000000;
JSON
{
  "hex": "#42b0e1",
  "rgb": {
    "r": 66,
    "g": 176,
    "b": 225
  },
  "hsl": {
    "h": 198.491,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.71531,
    "c": 0.12099,
    "h": 231.4
  },
  "luminance": 0.37645
}

Semantic roles & 50–950 ramp

primary
#42B0E1
secondary
#E0B39F
accent
#7138EF
background
#F9FCFE
surface
#F1F8FD
border
#CBD1D5
text
#0D1316
muted
#7E8284

Preview Lab

Preview with #42B0E1

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

Preview Lab → · Contrast checker → · Palette generator →

#42B0E1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva