#337AB9#337AB9

#337AB9 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.5% C 0.121 H 248.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#337AB9
RGB	rgb(51, 122, 185)
HSL	hsl(208, 57%, 46%)
HSV	hsv(208, 72%, 73%)
CMYK	cmyk(72.4%, 34.1%, 0%, 27.5%)
CIE-LAB	lab(49.65, -0.81, -39.55)
CIE-LCH	lch(49.65, 39.55, 268.82°)
OKLab	oklab(56.47% -0.0442 -0.1123)
OKLCH	oklch(56.47% 0.121 248.5)
XYZ	xyz(17.0784, 18.1238, 48.4877)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AB9 #B97233

analogous

#33B9B5 #337AB9 #3337B9

triadic

#337AB9 #B9337A #7AB933

tetradic

#337AB9 #B533B9 #B97233 #37B933

square

#337AB9 #B533B9 #B97233 #37B933

split-complementary

#337AB9 #B93337 #B9B533

monochromatic

#193B59 #265A89 #337AB9 #5898D1 #88B6DE

Accessibility & contrast

On white

4.54

#337AB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#337AB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AB9

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AB9	#FFFFFF	#000000	##000000
##337AB9	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7DBC

Deuteranopia (green-blind)

#4A70B8

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337ab9;
/* rgb */ color: rgb(51, 122, 185);
/* oklch */ color: oklch(56.5% 0.121 248.5);

Tailwind

colors: {
  custom: {
    50: '#7ca0ce',
    500: '#337ab9',
    950: '#000000',
  },
}

SCSS

$custom: #337ab9;
$custom-light: #7ca0ce;
$custom-dark: #000000;

JSON

{
  "hex": "#337ab9",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 185
  },
  "hsl": {
    "h": 208.209,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.56466,
    "c": 0.12065,
    "h": 248.5
  },
  "luminance": 0.18126
}

Semantic roles & 50–950 ramp

primary

#337AB9

secondary

#C8A280

accent

#8F48E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #337AB9

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

Preview Lab → · Contrast checker → · Palette generator →