#337F9C#337F9C

#337F9C is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.2% C 0.086 H 226.7°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#337F9C
RGB	rgb(51, 127, 156)
HSL	hsl(197, 51%, 41%)
HSV	hsv(197, 67%, 61%)
CMYK	cmyk(67.3%, 18.6%, 0%, 38.8%)
CIE-LAB	lab(49.84, -13.85, -22.42)
CIE-LCH	lch(49.84, 26.36, 238.29°)
OKLab	oklab(56.18% -0.0591 -0.0627)
OKLCH	oklch(56.18% 0.086 226.7)
XYZ	xyz(14.9530, 18.2812, 34.1866)
Luminance	0.1828 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337F9C #9C5033

analogous

#339C84 #337F9C #334B9C

triadic

#337F9C #9C337F #7F9C33

tetradic

#337F9C #84339C #9C5033 #4B9C33

square

#337F9C #84339C #9C5033 #4B9C33

split-complementary

#337F9C #9C334B #9C8433

monochromatic

#153440 #24596E #337F9C #49A2C3 #77B9D3

Accessibility & contrast

On white

4.51

#337F9C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#337F9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337F9C

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337F9C	#FFFFFF	#000000	##000000
##337F9C	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7D9D

Deuteranopia (green-blind)

#61729C

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337f9c;
/* rgb */ color: rgb(51, 127, 156);
/* oklch */ color: oklch(56.2% 0.086 226.7);

Tailwind

colors: {
  custom: {
    50: '#77a4b9',
    500: '#337f9c',
    950: '#000000',
  },
}

SCSS

$custom: #337f9c;
$custom-light: #77a4b9;
$custom-dark: #000000;

JSON

{
  "hex": "#337f9c",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 156
  },
  "hsl": {
    "h": 196.571,
    "s": 50.725,
    "l": 40.588
  },
  "oklch": {
    "l": 0.5618,
    "c": 0.08615,
    "h": 226.7
  },
  "luminance": 0.18283
}

Semantic roles & 50–950 ramp

primary

#337F9C

secondary

#BB8570

accent

#744EDA

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #337F9C

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

Preview Lab → · Contrast checker → · Palette generator →