#337BA4#337BA4

#337BA4 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.6% C 0.095 H 237.1°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#337BA4
RGB	rgb(51, 123, 164)
HSL	hsl(202, 53%, 42%)
HSV	hsv(202, 69%, 64%)
CMYK	cmyk(68.9%, 25%, 0%, 35.7%)
CIE-LAB	lab(48.94, -8.85, -28.47)
CIE-LCH	lch(48.94, 29.82, 252.73°)
OKLab	oklab(55.58% -0.0519 -0.0801)
OKLCH	oklch(55.58% 0.095 237.1)
XYZ	xyz(15.1464, 17.5484, 37.7037)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BA4 #A45C33

analogous

#33A495 #337BA4 #3343A4

triadic

#337BA4 #A4337B #7BA433

tetradic

#337BA4 #9533A4 #A45C33 #43A433

square

#337BA4 #9533A4 #A45C33 #43A433

split-complementary

#337BA4 #A43343 #A49533

monochromatic

#163547 #245875 #337BA4 #4D9BC8 #7BB5D6

Accessibility & contrast

On white

4.66

#337BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#337BA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BA4

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BA4	#FFFFFF	#000000	##FFFFFF
##337BA4	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA6

Deuteranopia (green-blind)

#586FA3

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337ba4;
/* rgb */ color: rgb(51, 123, 164);
/* oklch */ color: oklch(55.6% 0.095 237.1);

Tailwind

colors: {
  custom: {
    50: '#78a1bf',
    500: '#337ba4',
    950: '#000000',
  },
}

SCSS

$custom: #337ba4;
$custom-light: #78a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#337ba4",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 164
  },
  "hsl": {
    "h": 201.77,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.55582,
    "c": 0.09541,
    "h": 237.1
  },
  "luminance": 0.1755
}

Semantic roles & 50–950 ramp

primary

#337BA4

secondary

#BF8F74

accent

#804CDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BA4

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

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