#337CB9#337CB9

#337CB9 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.119 H 247.2°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#337CB9
RGB	rgb(51, 124, 185)
HSL	hsl(207, 57%, 46%)
HSV	hsv(207, 72%, 73%)
CMYK	cmyk(72.4%, 33%, 0%, 27.5%)
CIE-LAB	lab(50.24, -2.01, -38.61)
CIE-LCH	lch(50.24, 38.66, 267.02°)
OKLab	oklab(56.93% -0.0461 -0.1095)
OKLCH	oklch(56.93% 0.119 247.2)
XYZ	xyz(17.3265, 18.6200, 48.5704)
Luminance	0.1862 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CB9 #B97033

analogous

#33B9B3 #337CB9 #3339B9

triadic

#337CB9 #B9337C #7CB933

tetradic

#337CB9 #B333B9 #B97033 #39B933

square

#337CB9 #B333B9 #B97033 #39B933

split-complementary

#337CB9 #B93339 #B9B333

monochromatic

#193C59 #265C89 #337CB9 #589AD1 #88B7DE

Accessibility & contrast

On white

4.45

#337CB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#337CB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CB9

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CB9	#FFFFFF	#000000	##000000
##337CB9	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607EBC

Deuteranopia (green-blind)

#4D72B8

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337cb9;
/* rgb */ color: rgb(51, 124, 185);
/* oklch */ color: oklch(56.9% 0.119 247.2);

Tailwind

colors: {
  custom: {
    50: '#7ca1ce',
    500: '#337cb9',
    950: '#000000',
  },
}

SCSS

$custom: #337cb9;
$custom-light: #7ca1ce;
$custom-dark: #000000;

JSON

{
  "hex": "#337cb9",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 185
  },
  "hsl": {
    "h": 207.313,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.56933,
    "c": 0.11882,
    "h": 247.2
  },
  "luminance": 0.18622
}

Semantic roles & 50–950 ramp

primary

#337CB9

secondary

#C8A180

accent

#8D48E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #337CB9

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

Preview Lab → · Contrast checker → · Palette generator →