#337AA4#337AA4

#337AA4 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.3% C 0.096 H 238.0°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#337AA4
RGB	rgb(51, 122, 164)
HSL	hsl(202, 53%, 42%)
HSV	hsv(202, 69%, 64%)
CMYK	cmyk(68.9%, 25.6%, 0%, 35.7%)
CIE-LAB	lab(48.64, -8.27, -28.95)
CIE-LCH	lch(48.64, 30.11, 254.05°)
OKLab	oklab(55.34% -0.0508 -0.0815)
OKLCH	oklch(55.34% 0.096 238)
XYZ	xyz(15.0230, 17.3016, 37.6626)
Luminance	0.1730 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AA4 #A45D33

analogous

#33A496 #337AA4 #3342A4

triadic

#337AA4 #A4337A #7AA433

tetradic

#337AA4 #9633A4 #A45D33 #42A433

square

#337AA4 #9633A4 #A45D33 #42A433

split-complementary

#337AA4 #A43342 #A49633

monochromatic

#163547 #245775 #337AA4 #4D9AC8 #7BB4D6

Accessibility & contrast

On white

4.71

#337AA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#337AA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337AA4

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AA4	#FFFFFF	#000000	##FFFFFF
##337AA4	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667AA6

Deuteranopia (green-blind)

#576FA3

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #337aa4;
/* rgb */ color: rgb(51, 122, 164);
/* oklch */ color: oklch(55.3% 0.096 238.0);

Tailwind

colors: {
  custom: {
    50: '#78a0bf',
    500: '#337aa4',
    950: '#000000',
  },
}

SCSS

$custom: #337aa4;
$custom-light: #78a0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#337aa4",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 164
  },
  "hsl": {
    "h": 202.301,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.55339,
    "c": 0.09601,
    "h": 238
  },
  "luminance": 0.17303
}

Semantic roles & 50–950 ramp

primary

#337AA4

secondary

#BF9074

accent

#814CDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337AA4

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

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