#337CC7#337CC7

#337CC7 is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.7% C 0.136 H 251.9°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#337CC7
RGB	rgb(51, 124, 199)
HSL	hsl(210, 59%, 49%)
HSV	hsv(210, 74%, 78%)
CMYK	cmyk(74.4%, 37.7%, 0%, 22%)
CIE-LAB	lab(50.97, 3.07, -45.48)
CIE-LCH	lch(50.97, 45.59, 273.87°)
OKLab	oklab(57.74% -0.0424 -0.1296)
OKLCH	oklch(57.74% 0.136 251.9)
XYZ	xyz(18.8778, 19.2405, 56.7406)
Luminance	0.1924 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CC7 #C77E33

analogous

#33C6C7 #337CC7 #3433C7

triadic

#337CC7 #C7337C #7CC733

tetradic

#337CC7 #C733C6 #C77E33 #33C734

square

#337CC7 #C733C6 #C77E33 #33C734

split-complementary

#337CC7 #C73433 #C6C733

monochromatic

#1A3F66 #275E96 #337CC7 #619BD6 #91BAE3

Accessibility & contrast

On white

4.33

#337CC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#337CC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CC7

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CC7	#FFFFFF	#000000	##000000
##337CC7	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5981CA

Deuteranopia (green-blind)

#4373C6

Tritanopia (blue-blind)

#008E98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337cc7;
/* rgb */ color: rgb(51, 124, 199);
/* oklch */ color: oklch(57.7% 0.136 251.9);

Tailwind

colors: {
  custom: {
    50: '#7ea1d8',
    500: '#337cc7',
    950: '#000000',
  },
}

SCSS

$custom: #337cc7;
$custom-light: #7ea1d8;
$custom-dark: #000000;

JSON

{
  "hex": "#337cc7",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 199
  },
  "hsl": {
    "h": 210.405,
    "s": 59.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57742,
    "c": 0.13635,
    "h": 251.9
  },
  "luminance": 0.19243
}

Semantic roles & 50–950 ramp

primary

#337CC7

secondary

#CEAB88

accent

#9545E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337CC7

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

Preview Lab → · Contrast checker → · Palette generator →