#337AD4#337AD4

#337AD4 is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 58.1% C 0.155 H 256.0°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#337AD4
RGB	rgb(51, 122, 212)
HSL	hsl(214, 65%, 52%)
HSV	hsv(214, 76%, 83%)
CMYK	cmyk(75.9%, 42.5%, 0%, 16.9%)
CIE-LAB	lab(51.12, 9.08, -52.63)
CIE-LCH	lch(51.12, 53.41, 279.79°)
OKLab	oklab(58.1% -0.0377 -0.1506)
OKLCH	oklch(58.1% 0.155 256)
XYZ	xyz(20.2040, 19.3740, 64.9493)
Luminance	0.1938 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AD4 #D48D33

analogous

#33CBD4 #337AD4 #3D33D4

triadic

#337AD4 #D4337A #7AD433

tetradic

#337AD4 #D433CB #D48D33 #33D43D

square

#337AD4 #D433CB #D48D33 #33D43D

split-complementary

#337AD4 #D43D33 #CBD433

monochromatic

#184174 #235DA7 #337AD4 #669BDF #98BCE9

Accessibility & contrast

On white

4.31

#337AD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#337AD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AD4

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AD4	#FFFFFF	#000000	##000000
##337AD4	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D82D8

Deuteranopia (green-blind)

#3073D2

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337ad4;
/* rgb */ color: rgb(51, 122, 212);
/* oklch */ color: oklch(58.1% 0.155 256.0);

Tailwind

colors: {
  custom: {
    50: '#819fe2',
    500: '#337ad4',
    950: '#000000',
  },
}

SCSS

$custom: #337ad4;
$custom-light: #819fe2;
$custom-dark: #000000;

JSON

{
  "hex": "#337ad4",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 212
  },
  "hsl": {
    "h": 213.54,
    "s": 65.182,
    "l": 51.569
  },
  "oklch": {
    "l": 0.58099,
    "c": 0.15525,
    "h": 256
  },
  "luminance": 0.19376
}

Semantic roles & 50–950 ramp

primary

#337AD4

secondary

#D5B68E

accent

#9E40E8

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337AD4

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

Preview Lab → · Contrast checker → · Palette generator →