#337E9D#337E9D

#337E9D is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.0% C 0.087 H 228.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#337E9D
RGB	rgb(51, 126, 157)
HSL	hsl(198, 51%, 41%)
HSV	hsv(198, 68%, 62%)
CMYK	cmyk(67.5%, 19.7%, 0%, 38.4%)
CIE-LAB	lab(49.57, -12.96, -23.42)
CIE-LCH	lch(49.57, 26.77, 241.05°)
OKLab	oklab(55.98% -0.0576 -0.0655)
OKLCH	oklch(55.98% 0.087 228.7)
XYZ	xyz(14.9095, 18.0582, 34.5916)
Luminance	0.1806 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337E9D #9D5233

analogous

#339D87 #337E9D #33499D

triadic

#337E9D #9D337E #7E9D33

tetradic

#337E9D #87339D #9D5233 #499D33

square

#337E9D #87339D #9D5233 #499D33

split-complementary

#337E9D #9D3349 #9D8733

monochromatic

#153441 #24596F #337E9D #49A0C4 #77B8D3

Accessibility & contrast

On white

4.55

#337E9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#337E9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337E9D

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337E9D	#FFFFFF	#000000	##000000
##337E9D	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7C9F

Deuteranopia (green-blind)

#5F719D

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337e9d;
/* rgb */ color: rgb(51, 126, 157);
/* oklch */ color: oklch(56.0% 0.087 228.7);

Tailwind

colors: {
  custom: {
    50: '#77a3ba',
    500: '#337e9d',
    950: '#000000',
  },
}

SCSS

$custom: #337e9d;
$custom-light: #77a3ba;
$custom-dark: #000000;

JSON

{
  "hex": "#337e9d",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 157
  },
  "hsl": {
    "h": 197.547,
    "s": 50.962,
    "l": 40.784
  },
  "oklch": {
    "l": 0.55978,
    "c": 0.08727,
    "h": 228.7
  },
  "luminance": 0.1806
}

Semantic roles & 50–950 ramp

primary

#337E9D

secondary

#BB8670

accent

#774DDA

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #337E9D

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

Preview Lab → · Contrast checker → · Palette generator →