#337F91#337F91

#337F91 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.7% C 0.079 H 216.1°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#337F91
RGB	rgb(51, 127, 145)
HSL	hsl(191, 48%, 38%)
HSV	hsv(191, 65%, 57%)
CMYK	cmyk(64.8%, 12.4%, 0%, 43.1%)
CIE-LAB	lab(49.41, -17.46, -16.65)
CIE-LCH	lch(49.41, 24.13, 223.63°)
OKLab	oklab(55.69% -0.0635 -0.0463)
OKLCH	oklch(55.69% 0.079 216.1)
XYZ	xyz(14.0634, 17.9254, 29.5014)
Luminance	0.1793 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337F91 #914533

analogous

#339174 #337F91 #335091

triadic

#337F91 #91337F #7F9133

tetradic

#337F91 #743391 #914533 #509133

square

#337F91 #743391 #914533 #509133

split-complementary

#337F91 #913350 #917433

monochromatic

#133036 #235764 #337F91 #44A6BD #71BCCD

Accessibility & contrast

On white

4.58

#337F91 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#337F91 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337F91

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337F91	#FFFFFF	#000000	##000000
##337F91	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#737B92

Deuteranopia (green-blind)

#657191

Tritanopia (blue-blind)

#008685

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337f91;
/* rgb */ color: rgb(51, 127, 145);
/* oklch */ color: oklch(55.7% 0.079 216.1);

Tailwind

colors: {
  custom: {
    50: '#76a4b1',
    500: '#337f91',
    950: '#000000',
  },
}

SCSS

$custom: #337f91;
$custom-light: #76a4b1;
$custom-dark: #000000;

JSON

{
  "hex": "#337f91",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 145
  },
  "hsl": {
    "h": 191.489,
    "s": 47.959,
    "l": 38.431
  },
  "oklch": {
    "l": 0.55693,
    "c": 0.07861,
    "h": 216.1
  },
  "luminance": 0.17927
}

Semantic roles & 50–950 ramp

primary

#337F91

secondary

#B5796B

accent

#6A50D8

background

#F7FAFA

surface

#EEF4F5

border

#C9CECF

text

#090F10

muted

#7B7F7F

Preview Lab

Preview with #337F91

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

Preview Lab → · Contrast checker → · Palette generator →