#42B3D8#42B3D8

#42B3D8 is a light, moderate cyan. Relative luminance 0.384; OKLCH L 71.8% C 0.113 H 223.7°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX#42B3D8
RGBrgb(66, 179, 216)
HSLhsl(195, 66%, 55%)
HSVhsv(195, 69%, 85%)
CMYKcmyk(69.4%, 17.1%, 0%, 15.3%)
CIE-LABlab(68.28, -20.00, -27.91)
CIE-LCHlch(68.28, 34.34, 234.36°)
OKLaboklab(71.83% -0.0817 -0.078)
OKLCHoklch(71.83% 0.113 223.7)
XYZxyz(30.7565, 38.3528, 70.7343)
Luminance0.3836 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42B3D8 #D86742
analogous
#42D8B2 #42B3D8 #4268D8
triadic
#42B3D8 #D842B3 #B3D842
tetradic
#42B3D8 #B242D8 #D86742 #68D842
square
#42B3D8 #B242D8 #D86742 #68D842
split-complementary
#42B3D8 #D84268 #D8B242
monochromatic
#1B6A84 #2693B7 #42B3D8 #75C7E2 #A7DCED

Accessibility & contrast

On white

2.42
#42B3D8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.67
#42B3D8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B3D8
8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42B3D8#FFFFFF#000000##000000
##42B3D81.002.428.678.67
#FFFFFF2.421.0021.0021.00
#0000008.6721.001.001.00
##0000008.6721.001.001.00

Color blindness preview

Protanopia (red-blind)
#9EAFDA
Deuteranopia (green-blind)
#89A0D8
Tritanopia (blue-blind)
#00BEBF
Achromatopsia (no color)
#A6A6A6

Design tokens & code

CSS
--color: #42b3d8;
/* rgb */ color: rgb(66, 179, 216);
/* oklch */ color: oklch(71.8% 0.113 223.7);
Tailwind
colors: {
  custom: {
    50: '#89c9e4',
    500: '#42b3d8',
    950: '#000000',
  },
}
SCSS
$custom: #42b3d8;
$custom-light: #89c9e4;
$custom-dark: #000000;
JSON
{
  "hex": "#42b3d8",
  "rgb": {
    "r": 66,
    "g": 179,
    "b": 216
  },
  "hsl": {
    "h": 194.8,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.71834,
    "c": 0.11301,
    "h": 223.7
  },
  "luminance": 0.38356
}

Semantic roles & 50–950 ramp

primary
#42B3D8
secondary
#DAAB9C
accent
#693FE9
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #42B3D8

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

Preview Lab → · Contrast checker → · Palette generator →

#42B3D8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva