#42B1CA#42B1CA

#42B1CA is a light, moderate cyan. Relative luminance 0.369; OKLCH L 70.8% C 0.105 H 215.6°. Best body text is #000000 at 8.37:1 contrast (WCAG AA passes).

Color values

HEX#42B1CA
RGBrgb(66, 177, 202)
HSLhsl(191, 56%, 53%)
HSVhsv(191, 67%, 79%)
CMYKcmyk(67.3%, 12.4%, 0%, 20.8%)
CIE-LABlab(67.17, -23.36, -21.89)
CIE-LCHlch(67.17, 32.02, 223.14°)
OKLaboklab(70.78% -0.0851 -0.0609)
OKLCHoklch(70.78% 0.105 215.6)
XYZxyz(28.6251, 36.8636, 61.4724)
Luminance0.3687 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42B1CA #CA5B42
analogous
#42CA9F #42B1CA #426DCA
triadic
#42B1CA #CA42B1 #B1CA42
tetradic
#42B1CA #9F42CA #CA5B42 #6DCA42
square
#42B1CA #9F42CA #CA5B42 #6DCA42
split-complementary
#42B1CA #CA426D #CA9F42
monochromatic
#206372 #2D8CA2 #42B1CA #72C5D7 #A2D8E5

Accessibility & contrast

On white

2.51
#42B1CA on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.37
#42B1CA on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1CA
8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42B1CA#FFFFFF#000000##000000
##42B1CA1.002.518.378.37
#FFFFFF2.511.0021.0021.00
#0000008.3721.001.001.00
##0000008.3721.001.001.00

Color blindness preview

Protanopia (red-blind)
#A0ACCB
Deuteranopia (green-blind)
#8C9DCA
Tritanopia (blue-blind)
#00BAB9
Achromatopsia (no color)
#A3A3A3

Design tokens & code

CSS
--color: #42b1ca;
/* rgb */ color: rgb(66, 177, 202);
/* oklch */ color: oklch(70.8% 0.105 215.6);
Tailwind
colors: {
  custom: {
    50: '#87c8da',
    500: '#42b1ca',
    950: '#000000',
  },
}
SCSS
$custom: #42b1ca;
$custom-light: #87c8da;
$custom-dark: #000000;
JSON
{
  "hex": "#42b1ca",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 202
  },
  "hsl": {
    "h": 191.029,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70777,
    "c": 0.10469,
    "h": 215.6
  },
  "luminance": 0.36867
}

Semantic roles & 50–950 ramp

primary
#42B1CA
secondary
#D1A196
accent
#6448DF
background
#F8FCFD
surface
#F0F8FA
border
#CBD1D3
text
#0D1314
muted
#7D8283

Preview Lab

Preview with #42B1CA

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

Preview Lab → · Contrast checker → · Palette generator →

#42B1CA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva