#337AC4#337AC4

#337AC4 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.1% C 0.135 H 252.1°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#337AC4
RGB	rgb(51, 122, 196)
HSL	hsl(211, 59%, 48%)
HSV	hsv(211, 74%, 77%)
CMYK	cmyk(74%, 37.8%, 0%, 23.1%)
CIE-LAB	lab(50.22, 3.19, -44.95)
CIE-LCH	lch(50.22, 45.06, 274.06°)
OKLab	oklab(57.11% -0.0413 -0.1281)
OKLCH	oklch(57.11% 0.135 252.1)
XYZ	xyz(18.2849, 18.6063, 54.8416)
Luminance	0.1861 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AC4 #C47D33

analogous

#33C2C4 #337AC4 #3533C4

triadic

#337AC4 #C4337A #7AC433

tetradic

#337AC4 #C433C2 #C47D33 #33C435

square

#337AC4 #C433C2 #C47D33 #33C435

split-complementary

#337AC4 #C43533 #C2C433

monochromatic

#1A3E63 #265C93 #337AC4 #5F99D5 #8FB8E2

Accessibility & contrast

On white

4.45

#337AC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#337AC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AC4

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AC4	#FFFFFF	#000000	##000000
##337AC4	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#587FC7

Deuteranopia (green-blind)

#4271C3

Tritanopia (blue-blind)

#008B95

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337ac4;
/* rgb */ color: rgb(51, 122, 196);
/* oklch */ color: oklch(57.1% 0.135 252.1);

Tailwind

colors: {
  custom: {
    50: '#7ea0d6',
    500: '#337ac4',
    950: '#000000',
  },
}

SCSS

$custom: #337ac4;
$custom-light: #7ea0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#337ac4",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 196
  },
  "hsl": {
    "h": 210.621,
    "s": 58.704,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57107,
    "c": 0.13456,
    "h": 252.1
  },
  "luminance": 0.18608
}

Semantic roles & 50–950 ramp

primary

#337AC4

secondary

#CDAA86

accent

#9646E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337AC4

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

Preview Lab → · Contrast checker → · Palette generator →