#337B8D#337B8D

#337B8D is a mid, moderate cyan. Relative luminance 0.168; OKLCH L 54.5% C 0.076 H 217.0°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#337B8D
RGB	rgb(51, 123, 141)
HSL	hsl(192, 47%, 38%)
HSV	hsv(192, 64%, 55%)
CMYK	cmyk(63.8%, 12.8%, 0%, 44.7%)
CIE-LAB	lab(48.00, -16.56, -16.45)
CIE-LCH	lch(48.00, 23.34, 224.80°)
OKLab	oklab(54.51% -0.0607 -0.0457)
OKLCH	oklch(54.51% 0.076 217)
XYZ	xyz(13.2540, 16.7914, 27.7367)
Luminance	0.1679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337B8D #8D4533

analogous

#338D72 #337B8D #334E8D

triadic

#337B8D #8D337B #7B8D33

tetradic

#337B8D #72338D #8D4533 #4E8D33

square

#337B8D #72338D #8D4533 #4E8D33

split-complementary

#337B8D #8D334E #8D7233

monochromatic

#122D33 #235460 #337B8D #43A2BA #6FB9CB

Accessibility & contrast

On white

4.82

#337B8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#337B8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337B8D

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337B8D	#FFFFFF	#000000	##FFFFFF
##337B8D	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F778E

Deuteranopia (green-blind)

#626E8D

Tritanopia (blue-blind)

#008181

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #337b8d;
/* rgb */ color: rgb(51, 123, 141);
/* oklch */ color: oklch(54.5% 0.076 217.0);

Tailwind

colors: {
  custom: {
    50: '#75a1ae',
    500: '#337b8d',
    950: '#000000',
  },
}

SCSS

$custom: #337b8d;
$custom-light: #75a1ae;
$custom-dark: #000000;

JSON

{
  "hex": "#337b8d",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 141
  },
  "hsl": {
    "h": 192,
    "s": 46.875,
    "l": 37.647
  },
  "oklch": {
    "l": 0.54512,
    "c": 0.07601,
    "h": 217
  },
  "luminance": 0.16793
}

Semantic roles & 50–950 ramp

primary

#337B8D

secondary

#B37869

accent

#6C51D7

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#090F10

muted

#7B7E7F

Preview Lab

Preview with #337B8D

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

Preview Lab → · Contrast checker → · Palette generator →