#337E9C#337E9C

#337E9C is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 55.9% C 0.086 H 227.8°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#337E9C
RGB	rgb(51, 126, 156)
HSL	hsl(197, 51%, 41%)
HSV	hsv(197, 67%, 61%)
CMYK	cmyk(67.3%, 19.2%, 0%, 38.8%)
CIE-LAB	lab(49.53, -13.29, -22.90)
CIE-LCH	lch(49.53, 26.48, 239.87°)
OKLab	oklab(55.93% -0.058 -0.0641)
OKLCH	oklch(55.93% 0.086 227.8)
XYZ	xyz(14.8245, 18.0242, 34.1438)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337E9C #9C5133

analogous

#339C85 #337E9C #33499C

triadic

#337E9C #9C337E #7E9C33

tetradic

#337E9C #85339C #9C5133 #499C33

square

#337E9C #85339C #9C5133 #499C33

split-complementary

#337E9C #9C3349 #9C8533

monochromatic

#153340 #24596E #337E9C #49A0C3 #77B8D3

Accessibility & contrast

On white

4.56

#337E9C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#337E9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337E9C

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337E9C	#FFFFFF	#000000	##000000
##337E9C	1.00	4.56	4.61	4.61
#FFFFFF	4.56	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)

#6E7C9E

Deuteranopia (green-blind)

#60719C

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337e9c;
/* rgb */ color: rgb(51, 126, 156);
/* oklch */ color: oklch(55.9% 0.086 227.8);

Tailwind

colors: {
  custom: {
    50: '#77a3b9',
    500: '#337e9c',
    950: '#000000',
  },
}

SCSS

$custom: #337e9c;
$custom-light: #77a3b9;
$custom-dark: #000000;

JSON

{
  "hex": "#337e9c",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 156
  },
  "hsl": {
    "h": 197.143,
    "s": 50.725,
    "l": 40.588
  },
  "oklch": {
    "l": 0.55932,
    "c": 0.08642,
    "h": 227.8
  },
  "luminance": 0.18026
}

Semantic roles & 50–950 ramp

primary

#337E9C

secondary

#BB8570

accent

#764EDA

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #337E9C

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

Preview Lab → · Contrast checker → · Palette generator →