#337BCC#337BCC

#337BCC is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.8% C 0.144 H 253.7°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#337BCC
RGB	rgb(51, 123, 204)
HSL	hsl(212, 60%, 50%)
HSV	hsv(212, 75%, 80%)
CMYK	cmyk(75%, 39.7%, 0%, 20%)
CIE-LAB	lab(50.95, 5.52, -48.36)
CIE-LCH	lch(50.95, 48.67, 276.51°)
OKLab	oklab(57.82% -0.0403 -0.138)
OKLCH	oklch(57.82% 0.144 253.7)
XYZ	xyz(19.3432, 19.2271, 59.8068)
Luminance	0.1923 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BCC #CC8433

analogous

#33C7CC #337BCC #3833CC

triadic

#337BCC #CC337B #7BCC33

tetradic

#337BCC #CC33C7 #CC8433 #33CC38

square

#337BCC #CC33C7 #CC8433 #33CC38

split-complementary

#337BCC #CC3833 #C7CC33

monochromatic

#1B406A #275D9B #337BCC #649BD8 #95BAE4

Accessibility & contrast

On white

4.33

#337BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#337BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BCC

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BCC	#FFFFFF	#000000	##000000
##337BCC	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5581CF

Deuteranopia (green-blind)

#3C73CA

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337bcc;
/* rgb */ color: rgb(51, 123, 204);
/* oklch */ color: oklch(57.8% 0.144 253.7);

Tailwind

colors: {
  custom: {
    50: '#7fa0dc',
    500: '#337bcc',
    950: '#000000',
  },
}

SCSS

$custom: #337bcc;
$custom-light: #7fa0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#337bcc",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 204
  },
  "hsl": {
    "h": 211.765,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.57819,
    "c": 0.1438,
    "h": 253.7
  },
  "luminance": 0.19229
}

Semantic roles & 50–950 ramp

primary

#337BCC

secondary

#D0AF8B

accent

#9945E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337BCC

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

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