#337BBD#337BBD

#337BBD is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.125 H 249.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#337BBD
RGB	rgb(51, 123, 189)
HSL	hsl(209, 58%, 47%)
HSV	hsv(209, 73%, 74%)
CMYK	cmyk(73%, 34.9%, 0%, 25.9%)
CIE-LAB	lab(50.15, 0.03, -41.06)
CIE-LCH	lch(50.15, 41.06, 270.05°)
OKLab	oklab(56.93% -0.044 -0.1167)
OKLCH	oklch(56.93% 0.125 249.3)
XYZ	xyz(17.6300, 18.5419, 50.7840)
Luminance	0.1854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BBD #BD7533

analogous

#33BDBA #337BBD #3336BD

triadic

#337BBD #BD337B #7BBD33

tetradic

#337BBD #BA33BD #BD7533 #36BD33

square

#337BBD #BA33BD #BD7533 #36BD33

split-complementary

#337BBD #BD3336 #BDBA33

monochromatic

#193C5D #265C8D #337BBD #5B99D3 #8BB7E0

Accessibility & contrast

On white

4.46

#337BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#337BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BBD

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BBD	#FFFFFF	#000000	##000000
##337BBD	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7EC0

Deuteranopia (green-blind)

#4971BC

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337bbd;
/* rgb */ color: rgb(51, 123, 189);
/* oklch */ color: oklch(56.9% 0.125 249.3);

Tailwind

colors: {
  custom: {
    50: '#7ca0d1',
    500: '#337bbd',
    950: '#000000',
  },
}

SCSS

$custom: #337bbd;
$custom-light: #7ca0d1;
$custom-dark: #000000;

JSON

{
  "hex": "#337bbd",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 189
  },
  "hsl": {
    "h": 208.696,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56927,
    "c": 0.1247,
    "h": 249.3
  },
  "luminance": 0.18544
}

Semantic roles & 50–950 ramp

primary

#337BBD

secondary

#CAA482

accent

#9147E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #337BBD

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

Preview Lab → · Contrast checker → · Palette generator →