#337AA6#337AA6

#337AA6 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.4% C 0.098 H 239.3°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#337AA6
RGB	rgb(51, 122, 166)
HSL	hsl(203, 53%, 43%)
HSV	hsv(203, 69%, 65%)
CMYK	cmyk(69.3%, 26.5%, 0%, 34.9%)
CIE-LAB	lab(48.73, -7.57, -29.97)
CIE-LCH	lch(48.73, 30.92, 255.82°)
OKLab	oklab(55.44% -0.0501 -0.0844)
OKLCH	oklch(55.44% 0.098 239.3)
XYZ	xyz(15.2050, 17.3744, 38.6213)
Luminance	0.1738 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AA6 #A65F33

analogous

#33A699 #337AA6 #3340A6

triadic

#337AA6 #A6337A #7AA633

tetradic

#337AA6 #9933A6 #A65F33 #40A633

square

#337AA6 #9933A6 #A65F33 #40A633

split-complementary

#337AA6 #A63340 #A69933

monochromatic

#163548 #255877 #337AA6 #4E9AC9 #7CB4D7

Accessibility & contrast

On white

4.69

#337AA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#337AA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #337AA6

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AA6	#FFFFFF	#000000	##FFFFFF
##337AA6	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667AA8

Deuteranopia (green-blind)

#566FA5

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337aa6;
/* rgb */ color: rgb(51, 122, 166);
/* oklch */ color: oklch(55.4% 0.098 239.3);

Tailwind

colors: {
  custom: {
    50: '#78a0c0',
    500: '#337aa6',
    950: '#000000',
  },
}

SCSS

$custom: #337aa6;
$custom-light: #78a0c0;
$custom-dark: #000000;

JSON

{
  "hex": "#337aa6",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 166
  },
  "hsl": {
    "h": 202.957,
    "s": 52.995,
    "l": 42.549
  },
  "oklch": {
    "l": 0.5544,
    "c": 0.09819,
    "h": 239.3
  },
  "luminance": 0.17376
}

Semantic roles & 50–950 ramp

primary

#337AA6

secondary

#C09275

accent

#834BDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337AA6

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

Preview Lab → · Contrast checker → · Palette generator →