#337C99#337C99

#337C99 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.3% C 0.084 H 227.6°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337C99
RGB	rgb(51, 124, 153)
HSL	hsl(197, 50%, 40%)
HSV	hsv(197, 67%, 60%)
CMYK	cmyk(66.7%, 19%, 0%, 40%)
CIE-LAB	lab(48.78, -13.17, -22.29)
CIE-LCH	lch(48.78, 25.90, 239.42°)
OKLab	oklab(55.3% -0.057 -0.0623)
OKLCH	oklch(55.3% 0.084 227.6)
XYZ	xyz(14.3204, 17.4175, 32.7380)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337C99 #995033

analogous

#339983 #337C99 #334999

triadic

#337C99 #99337C #7C9933

tetradic

#337C99 #833399 #995033 #499933

square

#337C99 #833399 #995033 #499933

split-complementary

#337C99 #993349 #998333

monochromatic

#14323D #24576B #337C99 #479FC2 #75B7D1

Accessibility & contrast

On white

4.68

#337C99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#337C99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337C99

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337C99	#FFFFFF	#000000	##FFFFFF
##337C99	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7A9A

Deuteranopia (green-blind)

#5E6F99

Tritanopia (blue-blind)

#008485

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337c99;
/* rgb */ color: rgb(51, 124, 153);
/* oklch */ color: oklch(55.3% 0.084 227.6);

Tailwind

colors: {
  custom: {
    50: '#77a2b7',
    500: '#337c99',
    950: '#000000',
  },
}

SCSS

$custom: #337c99;
$custom-light: #77a2b7;
$custom-dark: #000000;

JSON

{
  "hex": "#337c99",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 153
  },
  "hsl": {
    "h": 197.059,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.55297,
    "c": 0.08446,
    "h": 227.6
  },
  "luminance": 0.17419
}

Semantic roles & 50–950 ramp

primary

#337C99

secondary

#B9846E

accent

#764EDA

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #337C99

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

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