#337BA9#337BA9

#337BA9 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.101 H 240.2°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#337BA9
RGB	rgb(51, 123, 169)
HSL	hsl(203, 54%, 43%)
HSV	hsv(203, 70%, 66%)
CMYK	cmyk(69.8%, 27.2%, 0%, 33.7%)
CIE-LAB	lab(49.17, -7.11, -31.03)
CIE-LCH	lch(49.17, 31.83, 257.10°)
OKLab	oklab(55.84% -0.0501 -0.0875)
OKLCH	oklch(55.84% 0.101 240.2)
XYZ	xyz(15.6069, 17.7326, 40.1286)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BA9 #A96133

analogous

#33A99C #337BA9 #3340A9

triadic

#337BA9 #A9337B #7BA933

tetradic

#337BA9 #9C33A9 #A96133 #40A933

square

#337BA9 #9C33A9 #A96133 #40A933

split-complementary

#337BA9 #A93340 #A99C33

monochromatic

#17374B #25597A #337BA9 #4F9ACA #7EB5D8

Accessibility & contrast

On white

4.62

#337BA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#337BA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BA9

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BA9	#FFFFFF	#000000	##FFFFFF
##337BA9	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667BAB

Deuteranopia (green-blind)

#5670A8

Tritanopia (blue-blind)

#00868B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ba9;
/* rgb */ color: rgb(51, 123, 169);
/* oklch */ color: oklch(55.8% 0.101 240.2);

Tailwind

colors: {
  custom: {
    50: '#79a1c2',
    500: '#337ba9',
    950: '#000000',
  },
}

SCSS

$custom: #337ba9;
$custom-light: #79a1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#337ba9",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 169
  },
  "hsl": {
    "h": 203.39,
    "s": 53.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.55836,
    "c": 0.10083,
    "h": 240.2
  },
  "luminance": 0.17734
}

Semantic roles & 50–950 ramp

primary

#337BA9

secondary

#C19477

accent

#844BDD

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BA9

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

Preview Lab → · Contrast checker → · Palette generator →