#42D3EA#42D3EA

#42D3EA is a light, vivid teal. Relative luminance 0.537; OKLCH L 80.1% C 0.123 H 210.4°. Best body text is #000000 at 11.74:1 contrast (WCAG AA passes).

Color values

HEX#42D3EA
RGBrgb(66, 211, 234)
HSLhsl(188, 80%, 59%)
HSVhsv(188, 72%, 92%)
CMYKcmyk(71.8%, 9.8%, 0%, 8.2%)
CIE-LABlab(78.28, -30.47, -22.37)
CIE-LCHlch(78.28, 37.80, 216.29°)
OKLaboklab(80.08% -0.106 -0.0622)
OKLCHoklch(80.08% 0.123 210.4)
XYZxyz(40.3859, 53.6825, 86.0592)
Luminance0.5369 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42D3EA #EA5942
analogous
#42EAAD #42D3EA #427FEA
triadic
#42D3EA #EA42D3 #D3EA42
tetradic
#42D3EA #AD42EA #EA5942 #7FEA42
square
#42D3EA #AD42EA #EA5942 #7FEA42
split-complementary
#42D3EA #EA427F #EAAD42
monochromatic
#128CA0 #18BDD7 #42D3EA #79E0F0 #B0EDF6

Accessibility & contrast

On white

1.79
#42D3EA on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.74
#42D3EA on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42D3EA
11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42D3EA#FFFFFF#000000##000000
##42D3EA1.001.7911.7411.74
#FFFFFF1.791.0021.0021.00
#00000011.7421.001.001.00
##00000011.7421.001.001.00

Color blindness preview

Protanopia (red-blind)
#C0CBEB
Deuteranopia (green-blind)
#A8BAEA
Tritanopia (blue-blind)
#00DDDA
Achromatopsia (no color)
#C2C2C2

Design tokens & code

CSS
--color: #42d3ea;
/* rgb */ color: rgb(66, 211, 234);
/* oklch */ color: oklch(80.1% 0.123 210.4);
Tailwind
colors: {
  custom: {
    50: '#8de1f0',
    500: '#42d3ea',
    950: '#000000',
  },
}
SCSS
$custom: #42d3ea;
$custom-light: #8de1f0;
$custom-dark: #000000;
JSON
{
  "hex": "#42d3ea",
  "rgb": {
    "r": 66,
    "g": 211,
    "b": 234
  },
  "hsl": {
    "h": 188.214,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.80083,
    "c": 0.12289,
    "h": 210.4
  },
  "luminance": 0.53687
}

Semantic roles & 50–950 ramp

primary
#42D3EA
secondary
#A23E2E
accent
#4C31F6
background
#FCFEFF
surface
#F5FCFE
border
#CFD5D6
text
#0E1516
muted
#7F8485

Preview Lab

Preview with #42D3EA

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

Preview Lab → · Contrast checker → · Palette generator →

#42D3EA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva