#337BA8#337BA8

#337BA8 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.100 H 239.6°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#337BA8
RGB	rgb(51, 123, 168)
HSL	hsl(203, 53%, 43%)
HSV	hsv(203, 70%, 66%)
CMYK	cmyk(69.6%, 26.8%, 0%, 34.1%)
CIE-LAB	lab(49.12, -7.46, -30.52)
CIE-LCH	lch(49.12, 31.42, 256.27°)
OKLab	oklab(55.78% -0.0505 -0.086)
OKLCH	oklch(55.78% 0.1 239.6)
XYZ	xyz(15.5133, 17.6952, 39.6361)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BA8 #A86033

analogous

#33A89A #337BA8 #3340A8

triadic

#337BA8 #A8337B #7BA833

tetradic

#337BA8 #9A33A8 #A86033 #40A833

square

#337BA8 #9A33A8 #A86033 #40A833

split-complementary

#337BA8 #A83340 #A89A33

monochromatic

#16364A #255979 #337BA8 #4F9AC9 #7EB5D8

Accessibility & contrast

On white

4.63

#337BA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#337BA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BA8

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BA8	#FFFFFF	#000000	##FFFFFF
##337BA8	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667BAA

Deuteranopia (green-blind)

#5670A7

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ba8;
/* rgb */ color: rgb(51, 123, 168);
/* oklch */ color: oklch(55.8% 0.100 239.6);

Tailwind

colors: {
  custom: {
    50: '#79a1c2',
    500: '#337ba8',
    950: '#000000',
  },
}

SCSS

$custom: #337ba8;
$custom-light: #79a1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#337ba8",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 168
  },
  "hsl": {
    "h": 203.077,
    "s": 53.425,
    "l": 42.941
  },
  "oklch": {
    "l": 0.55784,
    "c": 0.09972,
    "h": 239.6
  },
  "luminance": 0.17697
}

Semantic roles & 50–950 ramp

primary

#337BA8

secondary

#C19376

accent

#834BDD

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BA8

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

Preview Lab → · Contrast checker → · Palette generator →