#42BBD9#42BBD9

#42BBD9 is a light, moderate cyan. Relative luminance 0.417; OKLCH L 73.8% C 0.113 H 217.8°. Best body text is #000000 at 9.34:1 contrast (WCAG AA passes).

Color values

HEX#42BBD9
RGBrgb(66, 187, 217)
HSLhsl(192, 67%, 55%)
HSVhsv(192, 70%, 85%)
CMYKcmyk(69.6%, 13.8%, 0%, 14.9%)
CIE-LABlab(70.67, -23.80, -24.79)
CIE-LCHlch(70.67, 34.36, 226.17°)
OKLaboklab(73.76% -0.0893 -0.0691)
OKLCHoklch(73.76% 0.113 217.8)
XYZxyz(32.5363, 41.7049, 71.9673)
Luminance0.4171 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42BBD9 #D96042
analogous
#42D9AC #42BBD9 #426FD9
triadic
#42BBD9 #D942BB #BBD942
tetradic
#42BBD9 #AC42D9 #D96042 #6FD942
square
#42BBD9 #AC42D9 #D96042 #6FD942
split-complementary
#42BBD9 #D9426F #D9AC42
monochromatic
#1B7086 #259BB9 #42BBD9 #75CDE3 #A8E0ED

Accessibility & contrast

On white

2.25
#42BBD9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.34
#42BBD9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BBD9
9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42BBD9#FFFFFF#000000##000000
##42BBD91.002.259.349.34
#FFFFFF2.251.0021.0021.00
#0000009.3421.001.001.00
##0000009.3421.001.001.00

Color blindness preview

Protanopia (red-blind)
#A8B6DB
Deuteranopia (green-blind)
#92A6D9
Tritanopia (blue-blind)
#00C5C4
Achromatopsia (no color)
#ADADAD

Design tokens & code

CSS
--color: #42bbd9;
/* rgb */ color: rgb(66, 187, 217);
/* oklch */ color: oklch(73.8% 0.113 217.8);
Tailwind
colors: {
  custom: {
    50: '#89cfe4',
    500: '#42bbd9',
    950: '#000000',
  },
}
SCSS
$custom: #42bbd9;
$custom-light: #89cfe4;
$custom-dark: #000000;
JSON
{
  "hex": "#42bbd9",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 217
  },
  "hsl": {
    "h": 191.921,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.73761,
    "c": 0.11292,
    "h": 217.8
  },
  "luminance": 0.41709
}

Semantic roles & 50–950 ramp

primary
#42BBD9
secondary
#DBA89C
accent
#603EE9
background
#F9FCFD
surface
#F1F9FB
border
#CBD2D4
text
#0D1415
muted
#7E8283

Preview Lab

Preview with #42BBD9

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

Preview Lab → · Contrast checker → · Palette generator →

#42BBD9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva