#337D9D#337D9D

#337D9D is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.7% C 0.088 H 229.8°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337D9D
RGB	rgb(51, 125, 157)
HSL	hsl(198, 51%, 41%)
HSV	hsv(198, 68%, 62%)
CMYK	cmyk(67.5%, 20.4%, 0%, 38.4%)
CIE-LAB	lab(49.26, -12.39, -23.90)
CIE-LCH	lch(49.26, 26.92, 242.59°)
OKLab	oklab(55.73% -0.0565 -0.0669)
OKLCH	oklch(55.73% 0.088 229.8)
XYZ	xyz(14.7822, 17.8038, 34.5492)
Luminance	0.1781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337D9D #9D5333

analogous

#339D88 #337D9D #33489D

triadic

#337D9D #9D337D #7D9D33

tetradic

#337D9D #88339D #9D5333 #489D33

square

#337D9D #88339D #9D5333 #489D33

split-complementary

#337D9D #9D3348 #9D8833

monochromatic

#153341 #24586F #337D9D #499FC4 #77B7D3

Accessibility & contrast

On white

4.60

#337D9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#337D9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337D9D

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337D9D	#FFFFFF	#000000	##FFFFFF
##337D9D	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7B9F

Deuteranopia (green-blind)

#5E709D

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337d9d;
/* rgb */ color: rgb(51, 125, 157);
/* oklch */ color: oklch(55.7% 0.088 229.8);

Tailwind

colors: {
  custom: {
    50: '#77a2ba',
    500: '#337d9d',
    950: '#000000',
  },
}

SCSS

$custom: #337d9d;
$custom-light: #77a2ba;
$custom-dark: #000000;

JSON

{
  "hex": "#337d9d",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 157
  },
  "hsl": {
    "h": 198.113,
    "s": 50.962,
    "l": 40.784
  },
  "oklch": {
    "l": 0.55732,
    "c": 0.08761,
    "h": 229.8
  },
  "luminance": 0.17805
}

Semantic roles & 50–950 ramp

primary

#337D9D

secondary

#BB8770

accent

#784DDA

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #337D9D

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

Preview Lab → · Contrast checker → · Palette generator →