#337AD0#337AD0

#337AD0 is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.8% C 0.150 H 255.1°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#337AD0
RGB	rgb(51, 122, 208)
HSL	hsl(213, 63%, 51%)
HSV	hsv(213, 75%, 82%)
CMYK	cmyk(75.5%, 41.3%, 0%, 18.4%)
CIE-LAB	lab(50.89, 7.61, -50.73)
CIE-LCH	lch(50.89, 51.30, 278.53°)
OKLab	oklab(57.85% -0.0385 -0.145)
OKLCH	oklch(57.85% 0.15 255.1)
XYZ	xyz(19.7057, 19.1747, 62.3248)
Luminance	0.1918 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AD0 #D08933

analogous

#33C9D0 #337AD0 #3A33D0

triadic

#337AD0 #D0337A #7AD033

tetradic

#337AD0 #D033C9 #D08933 #33D03A

square

#337AD0 #D033C9 #D08933 #33D03A

split-complementary

#337AD0 #D03A33 #C9D033

monochromatic

#1A406F #255DA1 #337AD0 #659ADB #96BBE7

Accessibility & contrast

On white

4.34

#337AD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#337AD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AD0

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AD0	#FFFFFF	#000000	##000000
##337AD0	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5081D3

Deuteranopia (green-blind)

#3573CE

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337ad0;
/* rgb */ color: rgb(51, 122, 208);
/* oklch */ color: oklch(57.8% 0.150 255.1);

Tailwind

colors: {
  custom: {
    50: '#809fdf',
    500: '#337ad0',
    950: '#000000',
  },
}

SCSS

$custom: #337ad0;
$custom-light: #809fdf;
$custom-dark: #000000;

JSON

{
  "hex": "#337ad0",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 208
  },
  "hsl": {
    "h": 212.866,
    "s": 62.55,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57845,
    "c": 0.15006,
    "h": 255.1
  },
  "luminance": 0.19177
}

Semantic roles & 50–950 ramp

primary

#337AD0

secondary

#D2B38D

accent

#9C42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337AD0

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

Preview Lab → · Contrast checker → · Palette generator →