#337AC7#337AC7

#337AC7 is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.3% C 0.138 H 253.0°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#337AC7
RGB	rgb(51, 122, 199)
HSL	hsl(211, 59%, 49%)
HSV	hsv(211, 74%, 78%)
CMYK	cmyk(74.4%, 38.7%, 0%, 22%)
CIE-LAB	lab(50.39, 4.29, -46.41)
CIE-LCH	lch(50.39, 46.60, 275.28°)
OKLab	oklab(57.29% -0.0405 -0.1323)
OKLCH	oklch(57.29% 0.138 253)
XYZ	xyz(18.6297, 18.7443, 56.6579)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AC7 #C78033

analogous

#33C4C7 #337AC7 #3633C7

triadic

#337AC7 #C7337A #7AC733

tetradic

#337AC7 #C733C4 #C78033 #33C736

square

#337AC7 #C733C4 #C78033 #33C736

split-complementary

#337AC7 #C73633 #C4C733

monochromatic

#1A3E66 #275C96 #337AC7 #6199D6 #91B9E3

Accessibility & contrast

On white

4.42

#337AC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#337AC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AC7

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AC7	#FFFFFF	#000000	##000000
##337AC7	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)

#567FCA

Deuteranopia (green-blind)

#3F72C5

Tritanopia (blue-blind)

#008C97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337ac7;
/* rgb */ color: rgb(51, 122, 199);
/* oklch */ color: oklch(57.3% 0.138 253.0);

Tailwind

colors: {
  custom: {
    50: '#7ea0d8',
    500: '#337ac7',
    950: '#000000',
  },
}

SCSS

$custom: #337ac7;
$custom-light: #7ea0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#337ac7",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 199
  },
  "hsl": {
    "h": 211.216,
    "s": 59.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57288,
    "c": 0.13841,
    "h": 253
  },
  "luminance": 0.18746
}

Semantic roles & 50–950 ramp

primary

#337AC7

secondary

#CEAC88

accent

#9745E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337AC7

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

Preview Lab → · Contrast checker → · Palette generator →