#42BCD8#42BCD8

#42BCD8 is a light, moderate cyan. Relative luminance 0.421; OKLCH L 74.0% C 0.112 H 216.2°. Best body text is #000000 at 9.42:1 contrast (WCAG AA passes).

Color values

HEX#42BCD8
RGBrgb(66, 188, 216)
HSLhsl(191, 66%, 55%)
HSVhsv(191, 69%, 85%)
CMYKcmyk(69.4%, 13%, 0%, 15.3%)
CIE-LABlab(70.93, -24.61, -23.85)
CIE-LCHlch(70.93, 34.27, 224.10°)
OKLaboklab(73.96% -0.0907 -0.0665)
OKLCHoklch(73.96% 0.112 216.2)
XYZxyz(32.6195, 42.0788, 71.3553)
Luminance0.4208 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42BCD8 #D85E42
analogous
#42D8A9 #42BCD8 #4271D8
triadic
#42BCD8 #D842BC #BCD842
tetradic
#42BCD8 #A942D8 #D85E42 #71D842
square
#42BCD8 #A942D8 #D85E42 #71D842
split-complementary
#42BCD8 #D84271 #D8A942
monochromatic
#1B7184 #269CB7 #42BCD8 #75CEE2 #A7E0ED

Accessibility & contrast

On white

2.23
#42BCD8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.42
#42BCD8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BCD8
9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42BCD8#FFFFFF#000000##000000
##42BCD81.002.239.429.42
#FFFFFF2.231.0021.0021.00
#0000009.4221.001.001.00
##0000009.4221.001.001.00

Color blindness preview

Protanopia (red-blind)
#A9B6DA
Deuteranopia (green-blind)
#94A7D8
Tritanopia (blue-blind)
#00C6C5
Achromatopsia (no color)
#AEAEAE

Design tokens & code

CSS
--color: #42bcd8;
/* rgb */ color: rgb(66, 188, 216);
/* oklch */ color: oklch(74.0% 0.112 216.2);
Tailwind
colors: {
  custom: {
    50: '#89d0e4',
    500: '#42bcd8',
    950: '#000000',
  },
}
SCSS
$custom: #42bcd8;
$custom-light: #89d0e4;
$custom-dark: #000000;
JSON
{
  "hex": "#42bcd8",
  "rgb": {
    "r": 66,
    "g": 188,
    "b": 216
  },
  "hsl": {
    "h": 191.2,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.73957,
    "c": 0.11241,
    "h": 216.2
  },
  "luminance": 0.42083
}

Semantic roles & 50–950 ramp

primary
#42BCD8
secondary
#DAA79C
accent
#5F3FE9
background
#F9FCFD
surface
#F1F9FB
border
#CBD2D4
text
#0D1415
muted
#7E8283

Preview Lab

Preview with #42BCD8

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

Preview Lab → · Contrast checker → · Palette generator →

#42BCD8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva