#42B8D6#42B8D6

#42B8D6 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 72.9% C 0.111 H 218.2°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX#42B8D6
RGBrgb(66, 184, 214)
HSLhsl(192, 64%, 55%)
HSVhsv(192, 69%, 84%)
CMYKcmyk(69.2%, 14%, 0%, 16.1%)
CIE-LABlab(69.68, -23.21, -24.67)
CIE-LCHlch(69.68, 33.87, 226.75°)
OKLaboklab(72.93% -0.0875 -0.0688)
OKLCHoklch(72.93% 0.111 218.2)
XYZxyz(31.5198, 40.2907, 69.7210)
Luminance0.4029 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42B8D6 #D66042
analogous
#42D6AA #42B8D6 #426ED6
triadic
#42B8D6 #D642B8 #B8D642
tetradic
#42B8D6 #AA42D6 #D66042 #6ED642
square
#42B8D6 #AA42D6 #D66042 #6ED642
split-complementary
#42B8D6 #D6426E #D6AA42
monochromatic
#1C6D82 #2797B4 #42B8D6 #74CBE1 #A7DEEC

Accessibility & contrast

On white

2.32
#42B8D6 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.06
#42B8D6 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B8D6
9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42B8D6#FFFFFF#000000##000000
##42B8D61.002.329.069.06
#FFFFFF2.321.0021.0021.00
#0000009.0621.001.001.00
##0000009.0621.001.001.00

Color blindness preview

Protanopia (red-blind)
#A5B3D8
Deuteranopia (green-blind)
#90A4D6
Tritanopia (blue-blind)
#00C2C1
Achromatopsia (no color)
#AAAAAA

Design tokens & code

CSS
--color: #42b8d6;
/* rgb */ color: rgb(66, 184, 214);
/* oklch */ color: oklch(72.9% 0.111 218.2);
Tailwind
colors: {
  custom: {
    50: '#89cde2',
    500: '#42b8d6',
    950: '#000000',
  },
}
SCSS
$custom: #42b8d6;
$custom-light: #89cde2;
$custom-dark: #000000;
JSON
{
  "hex": "#42b8d6",
  "rgb": {
    "r": 66,
    "g": 184,
    "b": 214
  },
  "hsl": {
    "h": 192.162,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.72929,
    "c": 0.11128,
    "h": 218.2
  },
  "luminance": 0.40294
}

Semantic roles & 50–950 ramp

primary
#42B8D6
secondary
#D9A79B
accent
#6240E7
background
#F9FCFD
surface
#F1F9FB
border
#CBD2D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #42B8D6

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

Preview Lab → · Contrast checker → · Palette generator →

#42B8D6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva