#337FA9#337FA9

#337FA9 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.8% C 0.098 H 236.5°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#337FA9
RGB	rgb(51, 127, 169)
HSL	hsl(201, 54%, 43%)
HSV	hsv(201, 70%, 66%)
CMYK	cmyk(69.8%, 24.9%, 0%, 33.7%)
CIE-LAB	lab(50.39, -9.43, -29.13)
CIE-LCH	lch(50.39, 30.62, 252.07°)
OKLab	oklab(56.8% -0.0543 -0.0819)
OKLCH	oklch(56.8% 0.098 236.5)
XYZ	xyz(16.1132, 18.7454, 40.2974)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FA9 #A95D33

analogous

#33A998 #337FA9 #3344A9

triadic

#337FA9 #A9337F #7FA933

tetradic

#337FA9 #9833A9 #A95D33 #44A933

square

#337FA9 #9833A9 #A95D33 #44A933

split-complementary

#337FA9 #A93344 #A99833

monochromatic

#17384B #255C7A #337FA9 #4F9ECA #7EB8D8

Accessibility & contrast

On white

4.42

#337FA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#337FA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FA9

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FA9	#FFFFFF	#000000	##000000
##337FA9	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7EAB

Deuteranopia (green-blind)

#5B73A8

Tritanopia (blue-blind)

#008A8D

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337fa9;
/* rgb */ color: rgb(51, 127, 169);
/* oklch */ color: oklch(56.8% 0.098 236.5);

Tailwind

colors: {
  custom: {
    50: '#79a4c2',
    500: '#337fa9',
    950: '#000000',
  },
}

SCSS

$custom: #337fa9;
$custom-light: #79a4c2;
$custom-dark: #000000;

JSON

{
  "hex": "#337fa9",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 169
  },
  "hsl": {
    "h": 201.356,
    "s": 53.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.56802,
    "c": 0.0983,
    "h": 236.5
  },
  "luminance": 0.18747
}

Semantic roles & 50–950 ramp

primary

#337FA9

secondary

#C19177

accent

#7F4BDD

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337FA9

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

Preview Lab → · Contrast checker → · Palette generator →