#337D9E#337D9E

#337D9E is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.8% C 0.089 H 230.6°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337D9E
RGB	rgb(51, 125, 158)
HSL	hsl(199, 51%, 41%)
HSV	hsv(199, 68%, 62%)
CMYK	cmyk(67.7%, 20.9%, 0%, 38%)
CIE-LAB	lab(49.30, -12.06, -24.42)
CIE-LCH	lch(49.30, 27.23, 243.73°)
OKLab	oklab(55.78% -0.0562 -0.0684)
OKLCH	oklch(55.78% 0.089 230.6)
XYZ	xyz(14.8680, 17.8381, 35.0006)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337D9E #9E5433

analogous

#339E89 #337D9E #33479E

triadic

#337D9E #9E337D #7D9E33

tetradic

#337D9E #89339E #9E5433 #479E33

square

#337D9E #89339E #9E5433 #479E33

split-complementary

#337D9E #9E3347 #9E8933

monochromatic

#153441 #245870 #337D9E #4A9FC4 #78B7D3

Accessibility & contrast

On white

4.60

#337D9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#337D9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337D9E

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337D9E	#FFFFFF	#000000	##FFFFFF
##337D9E	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7BA0

Deuteranopia (green-blind)

#5E709E

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337d9e;
/* rgb */ color: rgb(51, 125, 158);
/* oklch */ color: oklch(55.8% 0.089 230.6);

Tailwind

colors: {
  custom: {
    50: '#77a2ba',
    500: '#337d9e',
    950: '#000000',
  },
}

SCSS

$custom: #337d9e;
$custom-light: #77a2ba;
$custom-dark: #000000;

JSON

{
  "hex": "#337d9e",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 158
  },
  "hsl": {
    "h": 198.505,
    "s": 51.196,
    "l": 40.98
  },
  "oklch": {
    "l": 0.55779,
    "c": 0.08852,
    "h": 230.6
  },
  "luminance": 0.1784
}

Semantic roles & 50–950 ramp

primary

#337D9E

secondary

#BC8871

accent

#794DDB

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #337D9E

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

Preview Lab → · Contrast checker → · Palette generator →