#337DA3#337DA3

#337DA3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.0% C 0.093 H 234.4°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#337DA3
RGB	rgb(51, 125, 163)
HSL	hsl(200, 52%, 42%)
HSV	hsv(200, 69%, 64%)
CMYK	cmyk(68.7%, 23.3%, 0%, 36.1%)
CIE-LAB	lab(49.51, -10.35, -27.01)
CIE-LCH	lch(49.51, 28.92, 249.03°)
OKLab	oklab(56.02% -0.0543 -0.0758)
OKLCH	oklch(56.02% 0.093 234.4)
XYZ	xyz(15.3071, 18.0137, 37.3135)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DA3 #A35933

analogous

#33A391 #337DA3 #3345A3

triadic

#337DA3 #A3337D #7DA333

tetradic

#337DA3 #9133A3 #A35933 #45A333

square

#337DA3 #9133A3 #A35933 #45A333

split-complementary

#337DA3 #A33345 #A39133

monochromatic

#163646 #245974 #337DA3 #4C9DC7 #7BB7D6

Accessibility & contrast

On white

4.56

#337DA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#337DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DA3

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DA3	#FFFFFF	#000000	##000000
##337DA3	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7CA5

Deuteranopia (green-blind)

#5B71A2

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337da3;
/* rgb */ color: rgb(51, 125, 163);
/* oklch */ color: oklch(56.0% 0.093 234.4);

Tailwind

colors: {
  custom: {
    50: '#78a2be',
    500: '#337da3',
    950: '#000000',
  },
}

SCSS

$custom: #337da3;
$custom-light: #78a2be;
$custom-dark: #000000;

JSON

{
  "hex": "#337da3",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 163
  },
  "hsl": {
    "h": 200.357,
    "s": 52.336,
    "l": 41.961
  },
  "oklch": {
    "l": 0.56019,
    "c": 0.09329,
    "h": 234.4
  },
  "luminance": 0.18015
}

Semantic roles & 50–950 ramp

primary

#337DA3

secondary

#BE8D73

accent

#7D4CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337DA3

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

Preview Lab → · Contrast checker → · Palette generator →