#337BC7#337BC7

#337BC7 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.5% C 0.137 H 252.4°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#337BC7
RGB	rgb(51, 123, 199)
HSL	hsl(211, 59%, 49%)
HSV	hsv(211, 74%, 78%)
CMYK	cmyk(74.4%, 38.2%, 0%, 22%)
CIE-LAB	lab(50.68, 3.68, -45.94)
CIE-LCH	lch(50.68, 46.09, 274.58°)
OKLab	oklab(57.52% -0.0414 -0.131)
OKLCH	oklch(57.52% 0.137 252.4)
XYZ	xyz(18.7531, 18.9911, 56.6991)
Luminance	0.1899 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BC7 #C77F33

analogous

#33C5C7 #337BC7 #3533C7

triadic

#337BC7 #C7337B #7BC733

tetradic

#337BC7 #C733C5 #C77F33 #33C735

square

#337BC7 #C733C5 #C77F33 #33C735

split-complementary

#337BC7 #C73533 #C5C733

monochromatic

#1A3F66 #275D96 #337BC7 #619AD6 #91B9E3

Accessibility & contrast

On white

4.38

#337BC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#337BC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BC7

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BC7	#FFFFFF	#000000	##000000
##337BC7	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5880CA

Deuteranopia (green-blind)

#4172C5

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337bc7;
/* rgb */ color: rgb(51, 123, 199);
/* oklch */ color: oklch(57.5% 0.137 252.4);

Tailwind

colors: {
  custom: {
    50: '#7ea0d8',
    500: '#337bc7',
    950: '#000000',
  },
}

SCSS

$custom: #337bc7;
$custom-light: #7ea0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#337bc7",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 199
  },
  "hsl": {
    "h": 210.811,
    "s": 59.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57515,
    "c": 0.13737,
    "h": 252.4
  },
  "luminance": 0.18993
}

Semantic roles & 50–950 ramp

primary

#337BC7

secondary

#CEAC88

accent

#9645E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337BC7

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

Preview Lab → · Contrast checker → · Palette generator →