#337CCC#337CCC

#337CCC is a mid, vivid cyan. Relative luminance 0.195; OKLCH L 58.0% C 0.143 H 253.2°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#337CCC
RGB	rgb(51, 124, 204)
HSL	hsl(211, 60%, 50%)
HSV	hsv(211, 75%, 80%)
CMYK	cmyk(75%, 39.2%, 0%, 20%)
CIE-LAB	lab(51.24, 4.91, -47.90)
CIE-LCH	lch(51.24, 48.15, 275.85°)
OKLab	oklab(58.04% -0.0411 -0.1367)
OKLCH	oklch(58.04% 0.143 253.2)
XYZ	xyz(19.4679, 19.4765, 59.8484)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CCC #CC8333

analogous

#33C8CC #337CCC #3733CC

triadic

#337CCC #CC337C #7CCC33

tetradic

#337CCC #CC33C8 #CC8333 #33CC37

square

#337CCC #CC33C8 #CC8333 #33CC37

split-complementary

#337CCC #CC3733 #C8CC33

monochromatic

#1B406A #275E9B #337CCC #649BD8 #95BBE4

Accessibility & contrast

On white

4.29

#337CCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#337CCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CCC

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CCC	#FFFFFF	#000000	##000000
##337CCC	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5682CF

Deuteranopia (green-blind)

#3E74CA

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337ccc;
/* rgb */ color: rgb(51, 124, 204);
/* oklch */ color: oklch(58.0% 0.143 253.2);

Tailwind

colors: {
  custom: {
    50: '#7fa1dc',
    500: '#337ccc',
    950: '#000000',
  },
}

SCSS

$custom: #337ccc;
$custom-light: #7fa1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#337ccc",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 204
  },
  "hsl": {
    "h": 211.373,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.58044,
    "c": 0.14275,
    "h": 253.2
  },
  "luminance": 0.19479
}

Semantic roles & 50–950 ramp

primary

#337CCC

secondary

#D0AF8B

accent

#9845E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337CCC

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

Preview Lab → · Contrast checker → · Palette generator →