#337AD1#337AD1

#337AD1 is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.9% C 0.151 H 255.4°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#337AD1
RGB	rgb(51, 122, 209)
HSL	hsl(213, 63%, 51%)
HSV	hsv(213, 76%, 82%)
CMYK	cmyk(75.6%, 41.6%, 0%, 18%)
CIE-LAB	lab(50.95, 7.98, -51.21)
CIE-LCH	lch(50.95, 51.82, 278.85°)
OKLab	oklab(57.91% -0.0383 -0.1464)
OKLCH	oklch(57.91% 0.151 255.4)
XYZ	xyz(19.8291, 19.2240, 62.9748)
Luminance	0.1923 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AD1 #D18A33

analogous

#33C9D1 #337AD1 #3B33D1

triadic

#337AD1 #D1337A #7AD133

tetradic

#337AD1 #D133C9 #D18A33 #33D13B

square

#337AD1 #D133C9 #D18A33 #33D13B

split-complementary

#337AD1 #D13B33 #C9D133

monochromatic

#194070 #255DA2 #337AD1 #659BDC #97BBE8

Accessibility & contrast

On white

4.33

#337AD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#337AD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AD1

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AD1	#FFFFFF	#000000	##000000
##337AD1	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5081D4

Deuteranopia (green-blind)

#3473CF

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337ad1;
/* rgb */ color: rgb(51, 122, 209);
/* oklch */ color: oklch(57.9% 0.151 255.4);

Tailwind

colors: {
  custom: {
    50: '#809fdf',
    500: '#337ad1',
    950: '#000000',
  },
}

SCSS

$custom: #337ad1;
$custom-light: #809fdf;
$custom-dark: #000000;

JSON

{
  "hex": "#337ad1",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 209
  },
  "hsl": {
    "h": 213.038,
    "s": 63.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.57908,
    "c": 0.15136,
    "h": 255.4
  },
  "luminance": 0.19226
}

Semantic roles & 50–950 ramp

primary

#337AD1

secondary

#D3B38D

accent

#9C42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337AD1

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

Preview Lab → · Contrast checker → · Palette generator →