#337DB8#337DB8

#337DB8 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.117 H 246.0°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#337DB8
RGB	rgb(51, 125, 184)
HSL	hsl(207, 57%, 46%)
HSV	hsv(207, 72%, 72%)
CMYK	cmyk(72.3%, 32.1%, 0%, 27.8%)
CIE-LAB	lab(50.49, -2.97, -37.64)
CIE-LCH	lch(50.49, 37.76, 265.50°)
OKLab	oklab(57.11% -0.0474 -0.1067)
OKLCH	oklch(57.11% 0.117 246)
XYZ	xyz(17.3473, 18.8298, 48.0584)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DB8 #B86E33

analogous

#33B8B0 #337DB8 #333AB8

triadic

#337DB8 #B8337D #7DB833

tetradic

#337DB8 #B033B8 #B86E33 #3AB833

square

#337DB8 #B033B8 #B86E33 #3AB833

split-complementary

#337DB8 #B8333A #B8B033

monochromatic

#183C58 #265C88 #337DB8 #589BD1 #88B8DE

Accessibility & contrast

On white

4.41

#337DB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#337DB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DB8

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DB8	#FFFFFF	#000000	##000000
##337DB8	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBB

Deuteranopia (green-blind)

#5073B7

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337db8;
/* rgb */ color: rgb(51, 125, 184);
/* oklch */ color: oklch(57.1% 0.117 246.0);

Tailwind

colors: {
  custom: {
    50: '#7ba2cd',
    500: '#337db8',
    950: '#000000',
  },
}

SCSS

$custom: #337db8;
$custom-light: #7ba2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#337db8",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 184
  },
  "hsl": {
    "h": 206.617,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.57112,
    "c": 0.11673,
    "h": 246
  },
  "luminance": 0.18832
}

Semantic roles & 50–950 ramp

primary

#337DB8

secondary

#C89F7F

accent

#8B48E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #337DB8

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

Preview Lab → · Contrast checker → · Palette generator →