#337ADE#337ADE

#337ADE is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.8% C 0.168 H 257.7°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#337ADE
RGB	rgb(51, 122, 222)
HSL	hsl(215, 72%, 54%)
HSV	hsv(215, 77%, 87%)
CMYK	cmyk(77%, 45%, 0%, 12.9%)
CIE-LAB	lab(51.72, 12.79, -57.33)
CIE-LCH	lch(51.72, 58.74, 282.58°)
OKLab	oklab(58.75% -0.0357 -0.1644)
OKLCH	oklch(58.75% 0.168 257.7)
XYZ	xyz(21.5047, 19.8943, 71.7997)
Luminance	0.1990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337ADE #DE9733

analogous

#33CFDE #337ADE #4133DE

triadic

#337ADE #DE337A #7ADE33

tetradic

#337ADE #DE33CF #DE9733 #33DE41

square

#337ADE #DE33CF #DE9733 #33DE41

split-complementary

#337ADE #DE4133 #CFDE33

monochromatic

#154282 #1D5DB6 #337ADE #689CE7 #9CBFEF

Accessibility & contrast

On white

4.22

#337ADE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#337ADE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337ADE

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337ADE	#FFFFFF	#000000	##000000
##337ADE	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4584E2

Deuteranopia (green-blind)

#1E74DC

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #337ade;
/* rgb */ color: rgb(51, 122, 222);
/* oklch */ color: oklch(58.8% 0.168 257.7);

Tailwind

colors: {
  custom: {
    50: '#839fe9',
    500: '#337ade',
    950: '#000000',
  },
}

SCSS

$custom: #337ade;
$custom-light: #839fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#337ade",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 222
  },
  "hsl": {
    "h": 215.088,
    "s": 72.152,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58752,
    "c": 0.16827,
    "h": 257.7
  },
  "luminance": 0.19897
}

Semantic roles & 50–950 ramp

primary

#337ADE

secondary

#DBBD92

accent

#A339EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #337ADE

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

Preview Lab → · Contrast checker → · Palette generator →