#42B3D5#42B3D5

#42B3D5 is a light, moderate cyan. Relative luminance 0.382; OKLCH L 71.7% C 0.111 H 221.7°. Best body text is #000000 at 8.64:1 contrast (WCAG AA passes).

Color values

HEX#42B3D5
RGBrgb(66, 179, 213)
HSLhsl(194, 64%, 55%)
HSVhsv(194, 69%, 84%)
CMYKcmyk(69%, 16%, 0%, 16.5%)
CIE-LABlab(68.17, -20.95, -26.43)
CIE-LCHlch(68.17, 33.73, 231.59°)
OKLaboklab(71.71% -0.0829 -0.0738)
OKLCHoklch(71.71% 0.111 221.7)
XYZxyz(30.3722, 38.1991, 68.7104)
Luminance0.3820 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42B3D5 #D56442
analogous
#42D5AE #42B3D5 #4269D5
triadic
#42B3D5 #D542B3 #B3D542
tetradic
#42B3D5 #AE42D5 #D56442 #69D542
square
#42B3D5 #AE42D5 #D56442 #69D542
split-complementary
#42B3D5 #D54269 #D5AE42
monochromatic
#1C6980 #2892B2 #42B3D5 #74C7E0 #A6DBEB

Accessibility & contrast

On white

2.43
#42B3D5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.64
#42B3D5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B3D5
8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42B3D5#FFFFFF#000000##000000
##42B3D51.002.438.648.64
#FFFFFF2.431.0021.0021.00
#0000008.6421.001.001.00
##0000008.6421.001.001.00

Color blindness preview

Protanopia (red-blind)
#9FAFD7
Deuteranopia (green-blind)
#8BA0D5
Tritanopia (blue-blind)
#00BEBE
Achromatopsia (no color)
#A6A6A6

Design tokens & code

CSS
--color: #42b3d5;
/* rgb */ color: rgb(66, 179, 213);
/* oklch */ color: oklch(71.7% 0.111 221.7);
Tailwind
colors: {
  custom: {
    50: '#88cae2',
    500: '#42b3d5',
    950: '#000000',
  },
}
SCSS
$custom: #42b3d5;
$custom-light: #88cae2;
$custom-dark: #000000;
JSON
{
  "hex": "#42b3d5",
  "rgb": {
    "r": 66,
    "g": 179,
    "b": 213
  },
  "hsl": {
    "h": 193.878,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.71706,
    "c": 0.11098,
    "h": 221.7
  },
  "luminance": 0.38203
}

Semantic roles & 50–950 ramp

primary
#42B3D5
secondary
#D8A99A
accent
#6741E7
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #42B3D5

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

Preview Lab → · Contrast checker → · Palette generator →

#42B3D5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva