#337C9E#337C9E

#337C9E is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.5% C 0.089 H 231.7°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#337C9E
RGB	rgb(51, 124, 158)
HSL	hsl(199, 51%, 41%)
HSV	hsv(199, 68%, 62%)
CMYK	cmyk(67.7%, 21.5%, 0%, 38%)
CIE-LAB	lab(48.99, -11.49, -24.90)
CIE-LCH	lch(48.99, 27.42, 245.23°)
OKLab	oklab(55.53% -0.0551 -0.0698)
OKLCH	oklch(55.53% 0.089 231.7)
XYZ	xyz(14.7420, 17.5862, 34.9587)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337C9E #9E5533

analogous

#339E8A #337C9E #33479E

triadic

#337C9E #9E337C #7C9E33

tetradic

#337C9E #8A339E #9E5533 #479E33

square

#337C9E #8A339E #9E5533 #479E33

split-complementary

#337C9E #9E3347 #9E8A33

monochromatic

#153341 #245870 #337C9E #4A9DC4 #78B6D3

Accessibility & contrast

On white

4.65

#337C9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#337C9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337C9E

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337C9E	#FFFFFF	#000000	##FFFFFF
##337C9E	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7AA0

Deuteranopia (green-blind)

#5C709E

Tritanopia (blue-blind)

#008587

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337c9e;
/* rgb */ color: rgb(51, 124, 158);
/* oklch */ color: oklch(55.5% 0.089 231.7);

Tailwind

colors: {
  custom: {
    50: '#77a2ba',
    500: '#337c9e',
    950: '#000000',
  },
}

SCSS

$custom: #337c9e;
$custom-light: #77a2ba;
$custom-dark: #000000;

JSON

{
  "hex": "#337c9e",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 158
  },
  "hsl": {
    "h": 199.065,
    "s": 51.196,
    "l": 40.98
  },
  "oklch": {
    "l": 0.55533,
    "c": 0.08891,
    "h": 231.7
  },
  "luminance": 0.17588
}

Semantic roles & 50–950 ramp

primary

#337C9E

secondary

#BC8971

accent

#7A4DDB

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F11

muted

#7C7E80

Preview Lab

Preview with #337C9E

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

Preview Lab → · Contrast checker → · Palette generator →