#337F8F#337F8F

#337F8F is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.6% C 0.078 H 213.9°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#337F8F
RGB	rgb(51, 127, 143)
HSL	hsl(190, 47%, 38%)
HSV	hsv(190, 64%, 56%)
CMYK	cmyk(64.3%, 11.2%, 0%, 43.9%)
CIE-LAB	lab(49.33, -18.11, -15.59)
CIE-LCH	lch(49.33, 23.89, 220.73°)
OKLab	oklab(55.61% -0.0644 -0.0433)
OKLCH	oklch(55.61% 0.078 213.9)
XYZ	xyz(13.9105, 17.8643, 28.6963)
Luminance	0.1787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337F8F #8F4333

analogous

#338F71 #337F8F #33518F

triadic

#337F8F #8F337F #7F8F33

tetradic

#337F8F #71338F #8F4333 #518F33

square

#337F8F #71338F #8F4333 #518F33

split-complementary

#337F8F #8F3351 #8F7133

monochromatic

#132F35 #235762 #337F8F #43A7BC #70BCCC

Accessibility & contrast

On white

4.59

#337F8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#337F8F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337F8F

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337F8F	#FFFFFF	#000000	##FFFFFF
##337F8F	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)

#737B90

Deuteranopia (green-blind)

#66718F

Tritanopia (blue-blind)

#008584

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337f8f;
/* rgb */ color: rgb(51, 127, 143);
/* oklch */ color: oklch(55.6% 0.078 213.9);

Tailwind

colors: {
  custom: {
    50: '#75a4af',
    500: '#337f8f',
    950: '#000000',
  },
}

SCSS

$custom: #337f8f;
$custom-light: #75a4af;
$custom-dark: #000000;

JSON

{
  "hex": "#337f8f",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 143
  },
  "hsl": {
    "h": 190.435,
    "s": 47.423,
    "l": 38.039
  },
  "oklch": {
    "l": 0.55608,
    "c": 0.07758,
    "h": 213.9
  },
  "luminance": 0.17866
}

Semantic roles & 50–950 ramp

primary

#337F8F

secondary

#B4776A

accent

#6851D7

background

#F7FAFA

surface

#EEF4F4

border

#C9CECE

text

#090F10

muted

#7B7F7F

Preview Lab

Preview with #337F8F

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

Preview Lab → · Contrast checker → · Palette generator →