#42738C#42738C

#42738C is a mid, moderate cyan. Relative luminance 0.153; OKLCH L 53.1% C 0.066 H 232.1°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX#42738C
RGBrgb(66, 115, 140)
HSLhsl(200, 36%, 40%)
HSVhsv(200, 53%, 55%)
CMYKcmyk(52.9%, 17.9%, 0%, 45.1%)
CIE-LABlab(46.06, -9.16, -18.76)
CIE-LCHlch(46.06, 20.88, 243.98°)
OKLaboklab(53.12% -0.0406 -0.0521)
OKLCHoklch(53.12% 0.066 232.1)
XYZxyz(13.1094, 15.3121, 27.0706)
Luminance0.1531 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#42738C #8C5B42
analogous
#428C80 #42738C #424E8C
triadic
#42738C #8C4273 #738C42
tetradic
#42738C #80428C #8C5B42 #4E8C42
square
#42738C #80428C #8C5B42 #4E8C42
split-complementary
#42738C #8C424E #8C8042
monochromatic
#1B2F39 #2E5162 #42738C #5A94B1 #84AFC5

Accessibility & contrast

On white

5.17
#42738C on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.06
#42738C on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42738C
5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##42738C#FFFFFF#000000##FFFFFF
##42738C1.005.174.065.17
#FFFFFF5.171.0021.001.00
#0000004.0621.001.0021.00
##FFFFFF5.171.0021.001.00

Color blindness preview

Protanopia (red-blind)
#67728D
Deuteranopia (green-blind)
#5C6A8C
Tritanopia (blue-blind)
#177A7B
Achromatopsia (no color)
#6D6D6D

Design tokens & code

CSS
--color: #42738c;
/* rgb */ color: rgb(66, 115, 140);
/* oklch */ color: oklch(53.1% 0.066 232.1);
Tailwind
colors: {
  custom: {
    50: '#7c9bad',
    500: '#42738c',
    950: '#000000',
  },
}
SCSS
$custom: #42738c;
$custom-light: #7c9bad;
$custom-dark: #000000;
JSON
{
  "hex": "#42738c",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 140
  },
  "hsl": {
    "h": 200.27,
    "s": 35.922,
    "l": 40.392
  },
  "oklch": {
    "l": 0.53118,
    "c": 0.06608,
    "h": 232.1
  },
  "luminance": 0.15313
}

Semantic roles & 50–950 ramp

primary
#42738C
secondary
#B08C7A
accent
#825CCC
background
#F7F9FA
surface
#EEF2F4
border
#C9CCCE
text
#0A0E10
muted
#7C7E7F

Preview Lab

Preview with #42738C

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

Preview Lab → · Contrast checker → · Palette generator →

#42738C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva