#337AC9#337AC9

#337AC9 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.4% C 0.141 H 253.5°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#337AC9
RGB	rgb(51, 122, 201)
HSL	hsl(212, 60%, 49%)
HSV	hsv(212, 75%, 79%)
CMYK	cmyk(74.6%, 39.3%, 0%, 21.2%)
CIE-LAB	lab(50.50, 5.03, -47.37)
CIE-LCH	lch(50.50, 47.64, 276.06°)
OKLab	oklab(57.41% -0.0401 -0.1352)
OKLCH	oklch(57.41% 0.141 253.5)
XYZ	xyz(18.8635, 18.8378, 57.8889)
Luminance	0.1884 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AC9 #C98233

analogous

#33C5C9 #337AC9 #3733C9

triadic

#337AC9 #C9337A #7AC933

tetradic

#337AC9 #C933C5 #C98233 #33C937

square

#337AC9 #C933C5 #C98233 #33C937

split-complementary

#337AC9 #C93733 #C5C933

monochromatic

#1A3F67 #275C98 #337AC9 #6299D7 #93B9E4

Accessibility & contrast

On white

4.40

#337AC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#337AC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AC9

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AC9	#FFFFFF	#000000	##000000
##337AC9	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5580CC

Deuteranopia (green-blind)

#3D72C7

Tritanopia (blue-blind)

#008D98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337ac9;
/* rgb */ color: rgb(51, 122, 201);
/* oklch */ color: oklch(57.4% 0.141 253.5);

Tailwind

colors: {
  custom: {
    50: '#7f9fda',
    500: '#337ac9',
    950: '#000000',
  },
}

SCSS

$custom: #337ac9;
$custom-light: #7f9fda;
$custom-dark: #000000;

JSON

{
  "hex": "#337ac9",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 201
  },
  "hsl": {
    "h": 211.6,
    "s": 59.524,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5741,
    "c": 0.14099,
    "h": 253.5
  },
  "luminance": 0.1884
}

Semantic roles & 50–950 ramp

primary

#337AC9

secondary

#CFAE89

accent

#9845E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #337AC9

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

Preview Lab → · Contrast checker → · Palette generator →