#337CC9#337CC9

#337CC9 is a mid, vivid cyan. Relative luminance 0.193; OKLCH L 57.9% C 0.139 H 252.5°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#337CC9
RGB	rgb(51, 124, 201)
HSL	hsl(211, 60%, 49%)
HSV	hsv(211, 75%, 79%)
CMYK	cmyk(74.6%, 38.3%, 0%, 21.2%)
CIE-LAB	lab(51.08, 3.81, -46.45)
CIE-LCH	lch(51.08, 46.61, 274.68°)
OKLab	oklab(57.86% -0.0419 -0.1325)
OKLCH	oklch(57.86% 0.139 252.5)
XYZ	xyz(19.1116, 19.3340, 57.9716)
Luminance	0.1934 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CC9 #C98033

analogous

#33C7C9 #337CC9 #3533C9

triadic

#337CC9 #C9337C #7CC933

tetradic

#337CC9 #C933C7 #C98033 #33C935

square

#337CC9 #C933C7 #C98033 #33C935

split-complementary

#337CC9 #C93533 #C7C933

monochromatic

#1A4067 #275E98 #337CC9 #629BD7 #93BAE4

Accessibility & contrast

On white

4.31

#337CC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#337CC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CC9

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CC9	#FFFFFF	#000000	##000000
##337CC9	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5881CC

Deuteranopia (green-blind)

#4173C7

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337cc9;
/* rgb */ color: rgb(51, 124, 201);
/* oklch */ color: oklch(57.9% 0.139 252.5);

Tailwind

colors: {
  custom: {
    50: '#7fa1da',
    500: '#337cc9',
    950: '#000000',
  },
}

SCSS

$custom: #337cc9;
$custom-light: #7fa1da;
$custom-dark: #000000;

JSON

{
  "hex": "#337cc9",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 201
  },
  "hsl": {
    "h": 210.8,
    "s": 59.524,
    "l": 49.412
  },
  "oklch": {
    "l": 0.57862,
    "c": 0.13891,
    "h": 252.5
  },
  "luminance": 0.19336
}

Semantic roles & 50–950 ramp

primary

#337CC9

secondary

#CFAD89

accent

#9645E3

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #337CC9

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

Preview Lab → · Contrast checker → · Palette generator →