#337FA4#337FA4

#337FA4 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.6% C 0.093 H 233.1°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#337FA4
RGB	rgb(51, 127, 164)
HSL	hsl(200, 53%, 42%)
HSV	hsv(200, 69%, 64%)
CMYK	cmyk(68.9%, 22.6%, 0%, 35.7%)
CIE-LAB	lab(50.17, -11.15, -26.57)
CIE-LCH	lch(50.17, 28.81, 247.23°)
OKLab	oklab(56.56% -0.0561 -0.0746)
OKLCH	oklch(56.56% 0.093 233.1)
XYZ	xyz(15.6528, 18.5612, 37.8725)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FA4 #A45833

analogous

#33A491 #337FA4 #3347A4

triadic

#337FA4 #A4337F #7FA433

tetradic

#337FA4 #9133A4 #A45833 #47A433

square

#337FA4 #9133A4 #A45833 #47A433

split-complementary

#337FA4 #A43347 #A49133

monochromatic

#163747 #245B75 #337FA4 #4D9FC8 #7BB8D6

Accessibility & contrast

On white

4.46

#337FA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#337FA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FA4

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FA4	#FFFFFF	#000000	##000000
##337FA4	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7EA6

Deuteranopia (green-blind)

#5D72A3

Tritanopia (blue-blind)

#00898B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337fa4;
/* rgb */ color: rgb(51, 127, 164);
/* oklch */ color: oklch(56.6% 0.093 233.1);

Tailwind

colors: {
  custom: {
    50: '#78a4bf',
    500: '#337fa4',
    950: '#000000',
  },
}

SCSS

$custom: #337fa4;
$custom-light: #78a4bf;
$custom-dark: #000000;

JSON

{
  "hex": "#337fa4",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 164
  },
  "hsl": {
    "h": 199.646,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.56557,
    "c": 0.0933,
    "h": 233.1
  },
  "luminance": 0.18563
}

Semantic roles & 50–950 ramp

primary

#337FA4

secondary

#BF8C74

accent

#7B4CDC

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337FA4

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

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