#337CC5#337CC5

#337CC5 is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.6% C 0.134 H 251.3°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#337CC5
RGB	rgb(51, 124, 197)
HSL	hsl(210, 59%, 49%)
HSV	hsv(210, 74%, 77%)
CMYK	cmyk(74.1%, 37.1%, 0%, 22.7%)
CIE-LAB	lab(50.86, 2.34, -44.51)
CIE-LCH	lch(50.86, 44.57, 273.01°)
OKLab	oklab(57.62% -0.0429 -0.1268)
OKLCH	oklch(57.62% 0.134 251.3)
XYZ	xyz(18.6472, 19.1482, 55.5257)
Luminance	0.1915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CC5 #C57C33

analogous

#33C5C5 #337CC5 #3333C5

triadic

#337CC5 #C5337C #7CC533

tetradic

#337CC5 #C533C5 #C57C33 #33C533

square

#337CC5 #C533C5 #C57C33 #33C533

split-complementary

#337CC5 #C53333 #C5C533

monochromatic

#1A3F64 #265D94 #337CC5 #5F9BD6 #90B9E2

Accessibility & contrast

On white

4.35

#337CC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#337CC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CC5

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CC5	#FFFFFF	#000000	##000000
##337CC5	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A80C8

Deuteranopia (green-blind)

#4473C4

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337cc5;
/* rgb */ color: rgb(51, 124, 197);
/* oklch */ color: oklch(57.6% 0.134 251.3);

Tailwind

colors: {
  custom: {
    50: '#7ea1d7',
    500: '#337cc5',
    950: '#000000',
  },
}

SCSS

$custom: #337cc5;
$custom-light: #7ea1d7;
$custom-dark: #000000;

JSON

{
  "hex": "#337cc5",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 197
  },
  "hsl": {
    "h": 210,
    "s": 58.871,
    "l": 48.627
  },
  "oklch": {
    "l": 0.57623,
    "c": 0.13381,
    "h": 251.3
  },
  "luminance": 0.1915
}

Semantic roles & 50–950 ramp

primary

#337CC5

secondary

#CDAA87

accent

#9446E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337CC5

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

Preview Lab → · Contrast checker → · Palette generator →