#337BBA#337BBA

#337BBA is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 56.8% C 0.121 H 248.2°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337BBA
RGB	rgb(51, 123, 186)
HSL	hsl(208, 57%, 46%)
HSV	hsv(208, 73%, 73%)
CMYK	cmyk(72.6%, 33.9%, 0%, 27.1%)
CIE-LAB	lab(49.99, -1.05, -39.57)
CIE-LCH	lch(49.99, 39.59, 268.48°)
OKLab	oklab(56.76% -0.0449 -0.1123)
OKLCH	oklch(56.76% 0.121 248.2)
XYZ	xyz(17.3078, 18.4130, 49.0867)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BBA #BA7233

analogous

#33BAB6 #337BBA #3338BA

triadic

#337BBA #BA337B #7BBA33

tetradic

#337BBA #B633BA #BA7233 #38BA33

square

#337BBA #B633BA #BA7233 #38BA33

split-complementary

#337BBA #BA3338 #BAB633

monochromatic

#193B5A #265B8A #337BBA #5999D1 #89B7DF

Accessibility & contrast

On white

4.48

#337BBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#337BBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BBA

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BBA	#FFFFFF	#000000	##000000
##337BBA	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7EBD

Deuteranopia (green-blind)

#4B71B9

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337bba;
/* rgb */ color: rgb(51, 123, 186);
/* oklch */ color: oklch(56.8% 0.121 248.2);

Tailwind

colors: {
  custom: {
    50: '#7ca0cf',
    500: '#337bba',
    950: '#000000',
  },
}

SCSS

$custom: #337bba;
$custom-light: #7ca0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#337bba",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 186
  },
  "hsl": {
    "h": 208,
    "s": 56.962,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56756,
    "c": 0.12096,
    "h": 248.2
  },
  "luminance": 0.18415
}

Semantic roles & 50–950 ramp

primary

#337BBA

secondary

#C9A280

accent

#8F48E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #337BBA

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

Preview Lab → · Contrast checker → · Palette generator →