#337F99#337F99

#337F99 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.0% C 0.084 H 224.0°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#337F99
RGB	rgb(51, 127, 153)
HSL	hsl(195, 50%, 40%)
HSV	hsv(195, 67%, 60%)
CMYK	cmyk(66.7%, 17%, 0%, 40%)
CIE-LAB	lab(49.71, -14.85, -20.86)
CIE-LCH	lch(49.71, 25.61, 234.55°)
OKLab	oklab(56.04% -0.0603 -0.0582)
OKLCH	oklch(56.04% 0.084 224)
XYZ	xyz(14.7021, 18.1809, 32.8653)
Luminance	0.1818 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337F99 #994D33

analogous

#339980 #337F99 #334C99

triadic

#337F99 #99337F #7F9933

tetradic

#337F99 #803399 #994D33 #4C9933

square

#337F99 #803399 #994D33 #4C9933

split-complementary

#337F99 #99334C #998033

monochromatic

#14333D #24596B #337F99 #47A3C2 #75BAD1

Accessibility & contrast

On white

4.53

#337F99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#337F99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337F99

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337F99	#FFFFFF	#000000	##000000
##337F99	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707C9A

Deuteranopia (green-blind)

#627299

Tritanopia (blue-blind)

#008787

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337f99;
/* rgb */ color: rgb(51, 127, 153);
/* oklch */ color: oklch(56.0% 0.084 224.0);

Tailwind

colors: {
  custom: {
    50: '#77a4b7',
    500: '#337f99',
    950: '#000000',
  },
}

SCSS

$custom: #337f99;
$custom-light: #77a4b7;
$custom-dark: #000000;

JSON

{
  "hex": "#337f99",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 153
  },
  "hsl": {
    "h": 195.294,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.56043,
    "c": 0.0838,
    "h": 224
  },
  "luminance": 0.18182
}

Semantic roles & 50–950 ramp

primary

#337F99

secondary

#B9826E

accent

#724EDA

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #337F99

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

Preview Lab → · Contrast checker → · Palette generator →