#337AA3#337AA3

#337AA3 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.3% C 0.095 H 237.4°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#337AA3
RGB	rgb(51, 122, 163)
HSL	hsl(202, 52%, 42%)
HSV	hsv(202, 69%, 64%)
CMYK	cmyk(68.7%, 25.2%, 0%, 36.1%)
CIE-LAB	lab(48.59, -8.62, -28.43)
CIE-LCH	lch(48.59, 29.71, 253.14°)
OKLab	oklab(55.29% -0.0512 -0.08)
OKLCH	oklch(55.29% 0.095 237.4)
XYZ	xyz(14.9331, 17.2656, 37.1888)
Luminance	0.1727 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AA3 #A35C33

analogous

#33A394 #337AA3 #3342A3

triadic

#337AA3 #A3337A #7AA333

tetradic

#337AA3 #9433A3 #A35C33 #42A333

square

#337AA3 #9433A3 #A35C33 #42A333

split-complementary

#337AA3 #A33342 #A39433

monochromatic

#163446 #245774 #337AA3 #4C9AC7 #7BB4D6

Accessibility & contrast

On white

4.72

#337AA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#337AA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337AA3

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AA3	#FFFFFF	#000000	##FFFFFF
##337AA3	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677AA5

Deuteranopia (green-blind)

#576FA2

Tritanopia (blue-blind)

#008488

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #337aa3;
/* rgb */ color: rgb(51, 122, 163);
/* oklch */ color: oklch(55.3% 0.095 237.4);

Tailwind

colors: {
  custom: {
    50: '#78a0be',
    500: '#337aa3',
    950: '#000000',
  },
}

SCSS

$custom: #337aa3;
$custom-light: #78a0be;
$custom-dark: #000000;

JSON

{
  "hex": "#337aa3",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 163
  },
  "hsl": {
    "h": 201.964,
    "s": 52.336,
    "l": 41.961
  },
  "oklch": {
    "l": 0.55288,
    "c": 0.09494,
    "h": 237.4
  },
  "luminance": 0.17267
}

Semantic roles & 50–950 ramp

primary

#337AA3

secondary

#BE8F73

accent

#814CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337AA3

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

Preview Lab → · Contrast checker → · Palette generator →