#337CC1#337CC1

#337CC1 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.4% C 0.129 H 250.1°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#337CC1
RGB	rgb(51, 124, 193)
HSL	hsl(209, 58%, 48%)
HSV	hsv(209, 74%, 76%)
CMYK	cmyk(73.6%, 35.8%, 0%, 24.3%)
CIE-LAB	lab(50.65, 0.88, -42.56)
CIE-LCH	lch(50.65, 42.57, 271.19°)
OKLab	oklab(57.39% -0.0439 -0.121)
OKLCH	oklch(57.39% 0.129 250.1)
XYZ	xyz(18.1949, 18.9673, 53.1439)
Luminance	0.1897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CC1 #C17833

analogous

#33C1BF #337CC1 #3335C1

triadic

#337CC1 #C1337C #7CC133

tetradic

#337CC1 #BF33C1 #C17833 #35C133

square

#337CC1 #BF33C1 #C17833 #35C133

split-complementary

#337CC1 #C13335 #C1BF33

monochromatic

#193E60 #265D91 #337CC1 #5D9AD4 #8DB8E1

Accessibility & contrast

On white

4.38

#337CC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#337CC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CC1

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CC1	#FFFFFF	#000000	##000000
##337CC1	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C80C4

Deuteranopia (green-blind)

#4873C0

Tritanopia (blue-blind)

#008C95

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337cc1;
/* rgb */ color: rgb(51, 124, 193);
/* oklch */ color: oklch(57.4% 0.129 250.1);

Tailwind

colors: {
  custom: {
    50: '#7da1d4',
    500: '#337cc1',
    950: '#000000',
  },
}

SCSS

$custom: #337cc1;
$custom-light: #7da1d4;
$custom-dark: #000000;

JSON

{
  "hex": "#337cc1",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 193
  },
  "hsl": {
    "h": 209.155,
    "s": 58.197,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57389,
    "c": 0.12876,
    "h": 250.1
  },
  "luminance": 0.18969
}

Semantic roles & 50–950 ramp

primary

#337CC1

secondary

#CBA784

accent

#9246E1

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337CC1

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

Preview Lab → · Contrast checker → · Palette generator →