#337BBE#337BBE

#337BBE is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.126 H 249.7°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#337BBE
RGB	rgb(51, 123, 190)
HSL	hsl(209, 58%, 47%)
HSV	hsv(209, 73%, 75%)
CMYK	cmyk(73.2%, 35.3%, 0%, 25.5%)
CIE-LAB	lab(50.20, 0.40, -41.55)
CIE-LCH	lch(50.20, 41.55, 270.55°)
OKLab	oklab(56.98% -0.0438 -0.1181)
OKLCH	oklch(56.98% 0.126 249.7)
XYZ	xyz(17.7390, 18.5854, 51.3577)
Luminance	0.1859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BBE #BE7633

analogous

#33BEBC #337BBE #3336BE

triadic

#337BBE #BE337B #7BBE33

tetradic

#337BBE #BC33BE #BE7633 #36BE33

square

#337BBE #BC33BE #BE7633 #36BE33

split-complementary

#337BBE #BE3336 #BEBC33

monochromatic

#193D5E #265C8E #337BBE #5B99D3 #8BB7E0

Accessibility & contrast

On white

4.45

#337BBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#337BBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BBE

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BBE	#FFFFFF	#000000	##000000
##337BBE	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7FC1

Deuteranopia (green-blind)

#4872BD

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337bbe;
/* rgb */ color: rgb(51, 123, 190);
/* oklch */ color: oklch(57.0% 0.126 249.7);

Tailwind

colors: {
  custom: {
    50: '#7ca0d2',
    500: '#337bbe',
    950: '#000000',
  },
}

SCSS

$custom: #337bbe;
$custom-light: #7ca0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#337bbe",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 190
  },
  "hsl": {
    "h": 208.921,
    "s": 57.676,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56984,
    "c": 0.12595,
    "h": 249.7
  },
  "luminance": 0.18587
}

Semantic roles & 50–950 ramp

primary

#337BBE

secondary

#CAA583

accent

#9147E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #337BBE

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

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