#337D8D#337D8D

#337D8D is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.0% C 0.076 H 214.3°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#337D8D
RGB	rgb(51, 125, 141)
HSL	hsl(191, 47%, 38%)
HSV	hsv(191, 64%, 55%)
CMYK	cmyk(63.8%, 11.3%, 0%, 44.7%)
CIE-LAB	lab(48.63, -17.66, -15.48)
CIE-LCH	lch(48.63, 23.49, 221.25°)
OKLab	oklab(55.02% -0.063 -0.043)
OKLCH	oklch(55.02% 0.076 214.3)
XYZ	xyz(13.5046, 17.2927, 27.8203)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337D8D #8D4333

analogous

#338D70 #337D8D #33508D

triadic

#337D8D #8D337D #7D8D33

tetradic

#337D8D #70338D #8D4333 #508D33

square

#337D8D #70338D #8D4333 #508D33

split-complementary

#337D8D #8D3350 #8D7033

monochromatic

#122D33 #235560 #337D8D #43A5BA #6FBBCB

Accessibility & contrast

On white

4.71

#337D8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#337D8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337D8D

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337D8D	#FFFFFF	#000000	##FFFFFF
##337D8D	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#71798E

Deuteranopia (green-blind)

#646F8D

Tritanopia (blue-blind)

#008382

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #337d8d;
/* rgb */ color: rgb(51, 125, 141);
/* oklch */ color: oklch(55.0% 0.076 214.3);

Tailwind

colors: {
  custom: {
    50: '#75a2ae',
    500: '#337d8d',
    950: '#000000',
  },
}

SCSS

$custom: #337d8d;
$custom-light: #75a2ae;
$custom-dark: #000000;

JSON

{
  "hex": "#337d8d",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 141
  },
  "hsl": {
    "h": 190.667,
    "s": 46.875,
    "l": 37.647
  },
  "oklch": {
    "l": 0.55018,
    "c": 0.07626,
    "h": 214.3
  },
  "luminance": 0.17294
}

Semantic roles & 50–950 ramp

primary

#337D8D

secondary

#B37669

accent

#6951D7

background

#F7FAFA

surface

#EDF3F4

border

#C8CDCE

text

#090F10

muted

#7B7F7F

Preview Lab

Preview with #337D8D

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

Preview Lab → · Contrast checker → · Palette generator →