#337A9B#337A9B

#337A9B is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 54.9% C 0.087 H 231.5°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#337A9B
RGB	rgb(51, 122, 155)
HSL	hsl(199, 50%, 40%)
HSV	hsv(199, 67%, 61%)
CMYK	cmyk(67.1%, 21.3%, 0%, 39.2%)
CIE-LAB	lab(48.24, -11.37, -24.29)
CIE-LCH	lch(48.24, 26.82, 244.93°)
OKLab	oklab(54.9% -0.0541 -0.0681)
OKLCH	oklch(54.9% 0.087 231.5)
XYZ	xyz(14.2388, 16.9879, 33.5326)
Luminance	0.1699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337A9B #9B5433

analogous

#339B88 #337A9B #33469B

triadic

#337A9B #9B337A #7A9B33

tetradic

#337A9B #88339B #9B5433 #469B33

square

#337A9B #88339B #9B5433 #469B33

split-complementary

#337A9B #9B3346 #9B8833

monochromatic

#15323F #24566D #337A9B #489CC3 #76B5D2

Accessibility & contrast

On white

4.78

#337A9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#337A9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337A9B

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337A9B	#FFFFFF	#000000	##FFFFFF
##337A9B	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A789D

Deuteranopia (green-blind)

#5B6E9B

Tritanopia (blue-blind)

#008385

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #337a9b;
/* rgb */ color: rgb(51, 122, 155);
/* oklch */ color: oklch(54.9% 0.087 231.5);

Tailwind

colors: {
  custom: {
    50: '#77a0b8',
    500: '#337a9b',
    950: '#000000',
  },
}

SCSS

$custom: #337a9b;
$custom-light: #77a0b8;
$custom-dark: #000000;

JSON

{
  "hex": "#337a9b",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 155
  },
  "hsl": {
    "h": 199.038,
    "s": 50.485,
    "l": 40.392
  },
  "oklch": {
    "l": 0.54897,
    "c": 0.08692,
    "h": 231.5
  },
  "luminance": 0.16989
}

Semantic roles & 50–950 ramp

primary

#337A9B

secondary

#BA876F

accent

#7A4EDA

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #337A9B

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

Preview Lab → · Contrast checker → · Palette generator →