#337B8F#337B8F

#337B8F is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 54.6% C 0.077 H 219.1°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#337B8F
RGB	rgb(51, 123, 143)
HSL	hsl(193, 47%, 38%)
HSV	hsv(193, 64%, 56%)
CMYK	cmyk(64.3%, 14%, 0%, 43.9%)
CIE-LAB	lab(48.07, -15.92, -17.51)
CIE-LCH	lch(48.07, 23.66, 227.72°)
OKLab	oklab(54.6% -0.0599 -0.0487)
OKLCH	oklch(54.6% 0.077 219.1)
XYZ	xyz(13.4041, 16.8515, 28.5275)
Luminance	0.1685 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337B8F #8F4733

analogous

#338F75 #337B8F #334D8F

triadic

#337B8F #8F337B #7B8F33

tetradic

#337B8F #75338F #8F4733 #4D8F33

square

#337B8F #75338F #8F4733 #4D8F33

split-complementary

#337B8F #8F334D #8F7533

monochromatic

#132D35 #235462 #337B8F #43A2BC #70B8CC

Accessibility & contrast

On white

4.80

#337B8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#337B8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337B8F

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337B8F	#FFFFFF	#000000	##FFFFFF
##337B8F	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7890

Deuteranopia (green-blind)

#616E8F

Tritanopia (blue-blind)

#008281

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #337b8f;
/* rgb */ color: rgb(51, 123, 143);
/* oklch */ color: oklch(54.6% 0.077 219.1);

Tailwind

colors: {
  custom: {
    50: '#75a1af',
    500: '#337b8f',
    950: '#000000',
  },
}

SCSS

$custom: #337b8f;
$custom-light: #75a1af;
$custom-dark: #000000;

JSON

{
  "hex": "#337b8f",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 143
  },
  "hsl": {
    "h": 193.043,
    "s": 47.423,
    "l": 38.039
  },
  "oklch": {
    "l": 0.54598,
    "c": 0.07721,
    "h": 219.1
  },
  "luminance": 0.16853
}

Semantic roles & 50–950 ramp

primary

#337B8F

secondary

#B47A6A

accent

#6E51D7

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#090F10

muted

#7B7E7F

Preview Lab

Preview with #337B8F

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

Preview Lab → · Contrast checker → · Palette generator →