#337D9F#337D9F

#337D9F is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.8% C 0.089 H 231.4°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#337D9F
RGB	rgb(51, 125, 159)
HSL	hsl(199, 51%, 41%)
HSV	hsv(199, 68%, 62%)
CMYK	cmyk(67.9%, 21.4%, 0%, 37.6%)
CIE-LAB	lab(49.34, -11.72, -24.94)
CIE-LCH	lch(49.34, 27.55, 244.84°)
OKLab	oklab(55.83% -0.0558 -0.0699)
OKLCH	oklch(55.83% 0.089 231.4)
XYZ	xyz(14.9544, 17.8726, 35.4558)
Luminance	0.1787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337D9F #9F5533

analogous

#339F8B #337D9F #33479F

triadic

#337D9F #9F337D #7D9F33

tetradic

#337D9F #8B339F #9F5533 #479F33

square

#337D9F #8B339F #9F5533 #479F33

split-complementary

#337D9F #9F3347 #9F8B33

monochromatic

#153442 #245971 #337D9F #4A9EC5 #79B7D4

Accessibility & contrast

On white

4.59

#337D9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#337D9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337D9F

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337D9F	#FFFFFF	#000000	##FFFFFF
##337D9F	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7BA1

Deuteranopia (green-blind)

#5D719F

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337d9f;
/* rgb */ color: rgb(51, 125, 159);
/* oklch */ color: oklch(55.8% 0.089 231.4);

Tailwind

colors: {
  custom: {
    50: '#77a2bb',
    500: '#337d9f',
    950: '#000000',
  },
}

SCSS

$custom: #337d9f;
$custom-light: #77a2bb;
$custom-dark: #000000;

JSON

{
  "hex": "#337d9f",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 159
  },
  "hsl": {
    "h": 198.889,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.55826,
    "c": 0.08943,
    "h": 231.4
  },
  "luminance": 0.17874
}

Semantic roles & 50–950 ramp

primary

#337D9F

secondary

#BC8971

accent

#7A4DDB

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337D9F

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

Preview Lab → · Contrast checker → · Palette generator →