#337CBC#337CBC

#337CBC is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.123 H 248.3°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#337CBC
RGB	rgb(51, 124, 188)
HSL	hsl(208, 57%, 47%)
HSV	hsv(208, 73%, 74%)
CMYK	cmyk(72.9%, 34%, 0%, 26.3%)
CIE-LAB	lab(50.39, -0.93, -40.10)
CIE-LCH	lch(50.39, 40.11, 268.67°)
OKLab	oklab(57.1% -0.0453 -0.1138)
OKLCH	oklch(57.1% 0.123 248.3)
XYZ	xyz(17.6466, 18.7480, 50.2559)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CBC #BC7333

analogous

#33BCB8 #337CBC #3338BC

triadic

#337CBC #BC337C #7CBC33

tetradic

#337CBC #B833BC #BC7333 #38BC33

square

#337CBC #B833BC #BC7333 #38BC33

split-complementary

#337CBC #BC3338 #BCB833

monochromatic

#193C5C #265C8C #337CBC #5A9AD2 #8AB7DF

Accessibility & contrast

On white

4.42

#337CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#337CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CBC

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CBC	#FFFFFF	#000000	##000000
##337CBC	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7FBF

Deuteranopia (green-blind)

#4B72BB

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337cbc;
/* rgb */ color: rgb(51, 124, 188);
/* oklch */ color: oklch(57.1% 0.123 248.3);

Tailwind

colors: {
  custom: {
    50: '#7ca1d0',
    500: '#337cbc',
    950: '#000000',
  },
}

SCSS

$custom: #337cbc;
$custom-light: #7ca1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#337cbc",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 188
  },
  "hsl": {
    "h": 208.029,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.57102,
    "c": 0.12251,
    "h": 248.3
  },
  "luminance": 0.1875
}

Semantic roles & 50–950 ramp

primary

#337CBC

secondary

#C9A381

accent

#8F47E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #337CBC

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

Preview Lab → · Contrast checker → · Palette generator →