#337BD0#337BD0

#337BD0 is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 58.1% C 0.149 H 254.7°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#337BD0
RGB	rgb(51, 123, 208)
HSL	hsl(212, 63%, 51%)
HSV	hsv(212, 75%, 82%)
CMYK	cmyk(75.5%, 40.9%, 0%, 18.4%)
CIE-LAB	lab(51.18, 6.99, -50.27)
CIE-LCH	lch(51.18, 50.76, 277.92°)
OKLab	oklab(58.07% -0.0394 -0.1437)
OKLCH	oklch(58.07% 0.149 254.7)
XYZ	xyz(19.8291, 19.4215, 62.3659)
Luminance	0.1942 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BD0 #D08833

analogous

#33CAD0 #337BD0 #3933D0

triadic

#337BD0 #D0337B #7BD033

tetradic

#337BD0 #D033CA #D08833 #33D039

square

#337BD0 #D033CA #D08833 #33D039

split-complementary

#337BD0 #D03933 #CAD033

monochromatic

#1A416F #255EA1 #337BD0 #659BDB #96BBE7

Accessibility & contrast

On white

4.30

#337BD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#337BD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BD0

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BD0	#FFFFFF	#000000	##000000
##337BD0	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5282D3

Deuteranopia (green-blind)

#3773CE

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337bd0;
/* rgb */ color: rgb(51, 123, 208);
/* oklch */ color: oklch(58.1% 0.149 254.7);

Tailwind

colors: {
  custom: {
    50: '#80a0df',
    500: '#337bd0',
    950: '#000000',
  },
}

SCSS

$custom: #337bd0;
$custom-light: #80a0df;
$custom-dark: #000000;

JSON

{
  "hex": "#337bd0",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 208
  },
  "hsl": {
    "h": 212.484,
    "s": 62.55,
    "l": 50.784
  },
  "oklch": {
    "l": 0.58067,
    "c": 0.14897,
    "h": 254.7
  },
  "luminance": 0.19424
}

Semantic roles & 50–950 ramp

primary

#337BD0

secondary

#D2B28D

accent

#9B42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337BD0

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

Preview Lab → · Contrast checker → · Palette generator →