#337AD2#337AD2

#337AD2 is a mid, vivid cyan. Relative luminance 0.193; OKLCH L 58.0% C 0.153 H 255.6°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#337AD2
RGB	rgb(51, 122, 210)
HSL	hsl(213, 64%, 51%)
HSV	hsv(213, 76%, 82%)
CMYK	cmyk(75.7%, 41.9%, 0%, 17.6%)
CIE-LAB	lab(51.01, 8.35, -51.68)
CIE-LCH	lch(51.01, 52.35, 279.17°)
OKLab	oklab(57.97% -0.0381 -0.1478)
OKLCH	oklch(57.97% 0.153 255.6)
XYZ	xyz(19.9533, 19.2737, 63.6289)
Luminance	0.1928 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AD2 #D28B33

analogous

#33C9D2 #337AD2 #3B33D2

triadic

#337AD2 #D2337A #7AD233

tetradic

#337AD2 #D233C9 #D28B33 #33D23B

square

#337AD2 #D233C9 #D28B33 #33D23B

split-complementary

#337AD2 #D23B33 #C9D233

monochromatic

#194172 #245DA4 #337AD2 #659BDD #97BBE8

Accessibility & contrast

On white

4.33

#337AD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#337AD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AD2

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AD2	#FFFFFF	#000000	##000000
##337AD2	1.00	4.33	4.86	4.86
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F81D5

Deuteranopia (green-blind)

#3373D0

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337ad2;
/* rgb */ color: rgb(51, 122, 210);
/* oklch */ color: oklch(58.0% 0.153 255.6);

Tailwind

colors: {
  custom: {
    50: '#809fe0',
    500: '#337ad2',
    950: '#000000',
  },
}

SCSS

$custom: #337ad2;
$custom-light: #809fe0;
$custom-dark: #000000;

JSON

{
  "hex": "#337ad2",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 210
  },
  "hsl": {
    "h": 213.208,
    "s": 63.855,
    "l": 51.176
  },
  "oklch": {
    "l": 0.57971,
    "c": 0.15265,
    "h": 255.6
  },
  "luminance": 0.19276
}

Semantic roles & 50–950 ramp

primary

#337AD2

secondary

#D4B48D

accent

#9D41E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337AD2

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

Preview Lab → · Contrast checker → · Palette generator →