#337A9F#337A9F

#337A9F is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.1% C 0.091 H 234.6°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#337A9F
RGB	rgb(51, 122, 159)
HSL	hsl(201, 51%, 41%)
HSV	hsv(201, 68%, 62%)
CMYK	cmyk(67.9%, 23.3%, 0%, 37.6%)
CIE-LAB	lab(48.42, -10.00, -26.37)
CIE-LCH	lch(48.42, 28.20, 249.23°)
OKLab	oklab(55.09% -0.0526 -0.074)
OKLCH	oklch(55.09% 0.091 234.6)
XYZ	xyz(14.5803, 17.1245, 35.3311)
Luminance	0.1713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337A9F #9F5833

analogous

#339F8E #337A9F #33449F

triadic

#337A9F #9F337A #7A9F33

tetradic

#337A9F #8E339F #9F5833 #449F33

square

#337A9F #8E339F #9F5833 #449F33

split-complementary

#337A9F #9F3344 #9F8E33

monochromatic

#153342 #245671 #337A9F #4A9BC5 #79B5D4

Accessibility & contrast

On white

4.75

#337A9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#337A9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337A9F

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337A9F	#FFFFFF	#000000	##FFFFFF
##337A9F	1.00	4.75	4.43	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6879A1

Deuteranopia (green-blind)

#596E9E

Tritanopia (blue-blind)

#008486

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #337a9f;
/* rgb */ color: rgb(51, 122, 159);
/* oklch */ color: oklch(55.1% 0.091 234.6);

Tailwind

colors: {
  custom: {
    50: '#77a0bb',
    500: '#337a9f',
    950: '#000000',
  },
}

SCSS

$custom: #337a9f;
$custom-light: #77a0bb;
$custom-dark: #000000;

JSON

{
  "hex": "#337a9f",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 159
  },
  "hsl": {
    "h": 200.556,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.5509,
    "c": 0.0908,
    "h": 234.6
  },
  "luminance": 0.17126
}

Semantic roles & 50–950 ramp

primary

#337A9F

secondary

#BC8B71

accent

#7E4DDB

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337A9F

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

Preview Lab → · Contrast checker → · Palette generator →