#337CC4#337CC4

#337CC4 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.6% C 0.133 H 251.0°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#337CC4
RGB	rgb(51, 124, 196)
HSL	hsl(210, 59%, 48%)
HSV	hsv(210, 74%, 77%)
CMYK	cmyk(74%, 36.7%, 0%, 23.1%)
CIE-LAB	lab(50.81, 1.98, -44.02)
CIE-LCH	lch(50.81, 44.07, 272.57°)
OKLab	oklab(57.56% -0.0431 -0.1253)
OKLCH	oklch(57.56% 0.133 251)
XYZ	xyz(18.5330, 19.1025, 54.9243)
Luminance	0.1910 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CC4 #C47B33

analogous

#33C4C3 #337CC4 #3334C4

triadic

#337CC4 #C4337C #7CC433

tetradic

#337CC4 #C333C4 #C47B33 #34C433

square

#337CC4 #C333C4 #C47B33 #34C433

split-complementary

#337CC4 #C43334 #C4C333

monochromatic

#1A3F63 #265D93 #337CC4 #5F9BD5 #8FB9E2

Accessibility & contrast

On white

4.36

#337CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#337CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CC4

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CC4	#FFFFFF	#000000	##000000
##337CC4	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B80C7

Deuteranopia (green-blind)

#4573C3

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337cc4;
/* rgb */ color: rgb(51, 124, 196);
/* oklch */ color: oklch(57.6% 0.133 251.0);

Tailwind

colors: {
  custom: {
    50: '#7ea1d6',
    500: '#337cc4',
    950: '#000000',
  },
}

SCSS

$custom: #337cc4;
$custom-light: #7ea1d6;
$custom-dark: #000000;

JSON

{
  "hex": "#337cc4",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 196
  },
  "hsl": {
    "h": 209.793,
    "s": 58.704,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57564,
    "c": 0.13254,
    "h": 251
  },
  "luminance": 0.19105
}

Semantic roles & 50–950 ramp

primary

#337CC4

secondary

#CDA986

accent

#9346E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337CC4

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

Preview Lab → · Contrast checker → · Palette generator →