#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
RGB	rgb(51, 124, 173)
HSL	hsl(204, 54%, 44%)
HSV	hsv(204, 71%, 68%)
CMYK	cmyk(70.5%, 28.3%, 0%, 32.2%)
CIE-LAB	lab(49.66, -6.29, -32.59)
CIE-LCH	lch(49.66, 33.19, 259.08°)
OKLab	oklab(56.28% -0.0498 -0.092)
OKLCH	oklch(56.28% 0.105 241.5)
XYZ	xyz(16.1128, 18.1345, 42.1782)
Luminance	0.1814 (WCAG relative)
Temperature	cool
Family	cyan

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
##337CAD	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

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 →