#337F9F#337F9F

#337F9F is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.3% C 0.089 H 229.2°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337F9F
RGB	rgb(51, 127, 159)
HSL	hsl(198, 51%, 41%)
HSV	hsv(198, 68%, 62%)
CMYK	cmyk(67.9%, 20.1%, 0%, 37.6%)
CIE-LAB	lab(49.96, -12.85, -23.98)
CIE-LCH	lch(49.96, 27.21, 241.82°)
OKLab	oklab(56.32% -0.0579 -0.0671)
OKLCH	oklch(56.32% 0.089 229.2)
XYZ	xyz(15.2101, 18.3841, 35.5411)
Luminance	0.1839 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337F9F #9F5333

analogous

#339F89 #337F9F #33499F

triadic

#337F9F #9F337F #7F9F33

tetradic

#337F9F #89339F #9F5333 #499F33

square

#337F9F #89339F #9F5333 #499F33

split-complementary

#337F9F #9F3349 #9F8933

monochromatic

#153542 #245A71 #337F9F #4AA1C5 #79B9D4

Accessibility & contrast

On white

4.49

#337F9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#337F9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337F9F

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337F9F	#FFFFFF	#000000	##000000
##337F9F	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7DA1

Deuteranopia (green-blind)

#60729F

Tritanopia (blue-blind)

#00888A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337f9f;
/* rgb */ color: rgb(51, 127, 159);
/* oklch */ color: oklch(56.3% 0.089 229.2);

Tailwind

colors: {
  custom: {
    50: '#78a4bb',
    500: '#337f9f',
    950: '#000000',
  },
}

SCSS

$custom: #337f9f;
$custom-light: #78a4bb;
$custom-dark: #000000;

JSON

{
  "hex": "#337f9f",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 159
  },
  "hsl": {
    "h": 197.778,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.56319,
    "c": 0.08869,
    "h": 229.2
  },
  "luminance": 0.18386
}

Semantic roles & 50–950 ramp

primary

#337F9F

secondary

#BC8871

accent

#774DDB

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337F9F

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

Preview Lab → · Contrast checker → · Palette generator →