#337CAD#337CAD

#337CAD is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.3% C 0.105 H 241.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX#337CAD
RGBrgb(51, 124, 173)
HSLhsl(204, 54%, 44%)
HSVhsv(204, 71%, 68%)
CMYKcmyk(70.5%, 28.3%, 0%, 32.2%)
CIE-LABlab(49.66, -6.29, -32.59)
CIE-LCHlch(49.66, 33.19, 259.08°)
OKLaboklab(56.28% -0.0498 -0.092)
OKLCHoklch(56.28% 0.105 241.5)
XYZxyz(16.1128, 18.1345, 42.1782)
Luminance0.1814 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#337CAD #AD6433
analogous
#33ADA1 #337CAD #333FAD
triadic
#337CAD #AD337C #7CAD33
tetradic
#337CAD #A133AD #AD6433 #3FAD33
square
#337CAD #A133AD #AD6433 #3FAD33
split-complementary
#337CAD #AD333F #ADA133
monochromatic
#17384E #255A7E #337CAD #519BCC #81B6DA

Accessibility & contrast

On white

4.54
#337CAD on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.63
#337CAD on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CAD
4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##337CAD#FFFFFF#000000##000000
##337CAD1.004.544.634.63
#FFFFFF4.541.0021.0021.00
#0000004.6321.001.001.00
##0000004.6321.001.001.00

Color blindness preview

Protanopia (red-blind)
#667DAF
Deuteranopia (green-blind)
#5571AC
Tritanopia (blue-blind)
#00888D
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #337cad;
/* rgb */ color: rgb(51, 124, 173);
/* oklch */ color: oklch(56.3% 0.105 241.5);
Tailwind
colors: {
  custom: {
    50: '#7aa1c5',
    500: '#337cad',
    950: '#000000',
  },
}
SCSS
$custom: #337cad;
$custom-light: #7aa1c5;
$custom-dark: #000000;
JSON
{
  "hex": "#337cad",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 173
  },
  "hsl": {
    "h": 204.098,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56284,
    "c": 0.10462,
    "h": 241.5
  },
  "luminance": 0.18136
}

Semantic roles & 50–950 ramp

primary
#337CAD
secondary
#C39779
accent
#854ADE
background
#F7F9FC
surface
#EEF2F8
border
#C9CCD1
text
#0A0F13
muted
#7C7E82

Preview Lab

Preview with #337CAD

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

Preview Lab → · Contrast checker → · Palette generator →

#337CAD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva