#337B91#337B91

#337B91 is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 54.7% C 0.079 H 221.2°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#337B91
RGB	rgb(51, 123, 145)
HSL	hsl(194, 48%, 38%)
HSV	hsv(194, 65%, 57%)
CMYK	cmyk(64.8%, 15.2%, 0%, 43.1%)
CIE-LAB	lab(48.15, -15.26, -18.57)
CIE-LCH	lch(48.15, 24.04, 230.58°)
OKLab	oklab(54.69% -0.0591 -0.0517)
OKLCH	oklch(54.69% 0.079 221.2)
XYZ	xyz(13.5570, 16.9126, 29.3326)
Luminance	0.1691 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337B91 #914933

analogous

#339178 #337B91 #334C91

triadic

#337B91 #91337B #7B9133

tetradic

#337B91 #783391 #914933 #4C9133

square

#337B91 #783391 #914933 #4C9133

split-complementary

#337B91 #91334C #917833

monochromatic

#132E36 #235564 #337B91 #44A1BD #71B8CD

Accessibility & contrast

On white

4.79

#337B91 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#337B91 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337B91

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337B91	#FFFFFF	#000000	##FFFFFF
##337B91	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7892

Deuteranopia (green-blind)

#606E91

Tritanopia (blue-blind)

#008282

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #337b91;
/* rgb */ color: rgb(51, 123, 145);
/* oklch */ color: oklch(54.7% 0.079 221.2);

Tailwind

colors: {
  custom: {
    50: '#75a1b1',
    500: '#337b91',
    950: '#000000',
  },
}

SCSS

$custom: #337b91;
$custom-light: #75a1b1;
$custom-dark: #000000;

JSON

{
  "hex": "#337b91",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 145
  },
  "hsl": {
    "h": 194.043,
    "s": 47.959,
    "l": 38.431
  },
  "oklch": {
    "l": 0.54686,
    "c": 0.07851,
    "h": 221.2
  },
  "luminance": 0.16914
}

Semantic roles & 50–950 ramp

primary

#337B91

secondary

#B57C6B

accent

#7050D8

background

#F7F9FA

surface

#EEF2F5

border

#C9CCCF

text

#090F10

muted

#7B7E7F

Preview Lab

Preview with #337B91

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

Preview Lab → · Contrast checker → · Palette generator →