#337D99#337D99

#337D99 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.5% C 0.084 H 226.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#337D99
RGB	rgb(51, 125, 153)
HSL	hsl(196, 50%, 40%)
HSV	hsv(196, 67%, 60%)
CMYK	cmyk(66.7%, 18.3%, 0%, 40%)
CIE-LAB	lab(49.09, -13.74, -21.82)
CIE-LCH	lch(49.09, 25.78, 237.80°)
OKLab	oklab(55.55% -0.0581 -0.0609)
OKLCH	oklch(55.55% 0.084 226.4)
XYZ	xyz(14.4463, 17.6694, 32.7800)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337D99 #994F33

analogous

#339982 #337D99 #334A99

triadic

#337D99 #99337D #7D9933

tetradic

#337D99 #823399 #994F33 #4A9933

square

#337D99 #823399 #994F33 #4A9933

split-complementary

#337D99 #99334A #998233

monochromatic

#14323D #24576B #337D99 #47A0C2 #75B8D1

Accessibility & contrast

On white

4.63

#337D99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#337D99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337D99

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337D99	#FFFFFF	#000000	##FFFFFF
##337D99	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7B9A

Deuteranopia (green-blind)

#607099

Tritanopia (blue-blind)

#008586

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337d99;
/* rgb */ color: rgb(51, 125, 153);
/* oklch */ color: oklch(55.5% 0.084 226.4);

Tailwind

colors: {
  custom: {
    50: '#77a2b7',
    500: '#337d99',
    950: '#000000',
  },
}

SCSS

$custom: #337d99;
$custom-light: #77a2b7;
$custom-dark: #000000;

JSON

{
  "hex": "#337d99",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 153
  },
  "hsl": {
    "h": 196.471,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.55546,
    "c": 0.0842,
    "h": 226.4
  },
  "luminance": 0.17671
}

Semantic roles & 50–950 ramp

primary

#337D99

secondary

#B9836E

accent

#754EDA

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #337D99

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

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