#337BC8#337BC8

#337BC8 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.6% C 0.139 H 252.7°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#337BC8
RGB	rgb(51, 123, 200)
HSL	hsl(211, 59%, 49%)
HSV	hsv(211, 75%, 78%)
CMYK	cmyk(74.5%, 38.5%, 0%, 21.6%)
CIE-LAB	lab(50.73, 4.05, -46.43)
CIE-LCH	lch(50.73, 46.61, 274.98°)
OKLab	oklab(57.58% -0.0412 -0.1324)
OKLCH	oklch(57.58% 0.139 252.7)
XYZ	xyz(18.8696, 19.0377, 57.3125)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BC8 #C88033

analogous

#33C6C8 #337BC8 #3633C8

triadic

#337BC8 #C8337B #7BC833

tetradic

#337BC8 #C833C6 #C88033 #33C836

square

#337BC8 #C833C6 #C88033 #33C836

split-complementary

#337BC8 #C83633 #C6C833

monochromatic

#1A3F66 #275D97 #337BC8 #619AD7 #92B9E3

Accessibility & contrast

On white

4.37

#337BC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#337BC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BC8

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BC8	#FFFFFF	#000000	##000000
##337BC8	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5780CB

Deuteranopia (green-blind)

#4073C6

Tritanopia (blue-blind)

#008D98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337bc8;
/* rgb */ color: rgb(51, 123, 200);
/* oklch */ color: oklch(57.6% 0.139 252.7);

Tailwind

colors: {
  custom: {
    50: '#7ea0d9',
    500: '#337bc8',
    950: '#000000',
  },
}

SCSS

$custom: #337bc8;
$custom-light: #7ea0d9;
$custom-dark: #000000;

JSON

{
  "hex": "#337bc8",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 200
  },
  "hsl": {
    "h": 211.007,
    "s": 59.363,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57575,
    "c": 0.13865,
    "h": 252.7
  },
  "luminance": 0.1904
}

Semantic roles & 50–950 ramp

primary

#337BC8

secondary

#CEAD89

accent

#9745E3

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337BC8

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

Preview Lab → · Contrast checker → · Palette generator →