#337B9A#337B9A

#337B9A is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.1% C 0.086 H 229.6°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#337B9A
RGB	rgb(51, 123, 154)
HSL	hsl(198, 50%, 40%)
HSV	hsv(198, 67%, 60%)
CMYK	cmyk(66.9%, 20.1%, 0%, 39.6%)
CIE-LAB	lab(48.51, -12.27, -23.29)
CIE-LCH	lch(48.51, 26.33, 242.22°)
OKLab	oklab(55.1% -0.0555 -0.0652)
OKLCH	oklch(55.1% 0.086 229.6)
XYZ	xyz(14.2786, 17.2013, 33.1333)
Luminance	0.1720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337B9A #9A5233

analogous

#339A85 #337B9A #33489A

triadic

#337B9A #9A337B #7B9A33

tetradic

#337B9A #85339A #9A5233 #489A33

square

#337B9A #85339A #9A5233 #489A33

split-complementary

#337B9A #9A3348 #9A8533

monochromatic

#15323E #24566C #337B9A #489DC2 #76B6D2

Accessibility & contrast

On white

4.73

#337B9A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#337B9A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337B9A

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337B9A	#FFFFFF	#000000	##FFFFFF
##337B9A	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B799C

Deuteranopia (green-blind)

#5D6F9A

Tritanopia (blue-blind)

#008485

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #337b9a;
/* rgb */ color: rgb(51, 123, 154);
/* oklch */ color: oklch(55.1% 0.086 229.6);

Tailwind

colors: {
  custom: {
    50: '#77a1b8',
    500: '#337b9a',
    950: '#000000',
  },
}

SCSS

$custom: #337b9a;
$custom-light: #77a1b8;
$custom-dark: #000000;

JSON

{
  "hex": "#337b9a",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 154
  },
  "hsl": {
    "h": 198.058,
    "s": 50.244,
    "l": 40.196
  },
  "oklch": {
    "l": 0.55096,
    "c": 0.08563,
    "h": 229.6
  },
  "luminance": 0.17203
}

Semantic roles & 50–950 ramp

primary

#337B9A

secondary

#BA856F

accent

#784EDA

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #337B9A

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

Preview Lab → · Contrast checker → · Palette generator →