#337AA8#337AA8

#337AA8 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.5% C 0.100 H 240.5°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337AA8
RGB	rgb(51, 122, 168)
HSL	hsl(204, 53%, 43%)
HSV	hsv(204, 70%, 66%)
CMYK	cmyk(69.6%, 27.4%, 0%, 34.1%)
CIE-LAB	lab(48.82, -6.87, -31.00)
CIE-LCH	lch(48.82, 31.75, 257.49°)
OKLab	oklab(55.54% -0.0494 -0.0874)
OKLCH	oklch(55.54% 0.1 240.5)
XYZ	xyz(15.3899, 17.4484, 39.5950)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AA8 #A86133

analogous

#33A89C #337AA8 #333FA8

triadic

#337AA8 #A8337A #7AA833

tetradic

#337AA8 #9C33A8 #A86133 #3FA833

square

#337AA8 #9C33A8 #A86133 #3FA833

split-complementary

#337AA8 #A8333F #A89C33

monochromatic

#16364A #255879 #337AA8 #4F99C9 #7EB4D8

Accessibility & contrast

On white

4.68

#337AA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#337AA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337AA8

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AA8	#FFFFFF	#000000	##FFFFFF
##337AA8	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657AAA

Deuteranopia (green-blind)

#556FA7

Tritanopia (blue-blind)

#00858A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337aa8;
/* rgb */ color: rgb(51, 122, 168);
/* oklch */ color: oklch(55.5% 0.100 240.5);

Tailwind

colors: {
  custom: {
    50: '#79a0c2',
    500: '#337aa8',
    950: '#000000',
  },
}

SCSS

$custom: #337aa8;
$custom-light: #79a0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#337aa8",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 168
  },
  "hsl": {
    "h": 203.59,
    "s": 53.425,
    "l": 42.941
  },
  "oklch": {
    "l": 0.55543,
    "c": 0.10041,
    "h": 240.5
  },
  "luminance": 0.1745
}

Semantic roles & 50–950 ramp

primary

#337AA8

secondary

#C19376

accent

#844BDD

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337AA8

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

Preview Lab → · Contrast checker → · Palette generator →