#337DC8#337DC8

#337DC8 is a mid, vivid cyan. Relative luminance 0.195; OKLCH L 58.0% C 0.137 H 251.6°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#337DC8
RGB	rgb(51, 125, 200)
HSL	hsl(210, 59%, 49%)
HSV	hsv(210, 75%, 78%)
CMYK	cmyk(74.5%, 37.5%, 0%, 21.6%)
CIE-LAB	lab(51.31, 2.83, -45.51)
CIE-LCH	lch(51.31, 45.59, 273.56°)
OKLab	oklab(58.03% -0.043 -0.1297)
OKLCH	oklch(58.03% 0.137 251.6)
XYZ	xyz(19.1203, 19.5390, 57.3961)
Luminance	0.1954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DC8 #C87E33

analogous

#33C8C8 #337DC8 #3333C8

triadic

#337DC8 #C8337D #7DC833

tetradic

#337DC8 #C833C8 #C87E33 #33C833

square

#337DC8 #C833C8 #C87E33 #33C833

split-complementary

#337DC8 #C83333 #C8C833

monochromatic

#1A4066 #275F97 #337DC8 #619CD7 #92BAE3

Accessibility & contrast

On white

4.28

#337DC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#337DC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DC8

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DC8	#FFFFFF	#000000	##000000
##337DC8	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A82CB

Deuteranopia (green-blind)

#4474C7

Tritanopia (blue-blind)

#008F99

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337dc8;
/* rgb */ color: rgb(51, 125, 200);
/* oklch */ color: oklch(58.0% 0.137 251.6);

Tailwind

colors: {
  custom: {
    50: '#7ea2d9',
    500: '#337dc8',
    950: '#000000',
  },
}

SCSS

$custom: #337dc8;
$custom-light: #7ea2d9;
$custom-dark: #000000;

JSON

{
  "hex": "#337dc8",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 200
  },
  "hsl": {
    "h": 210.201,
    "s": 59.363,
    "l": 49.216
  },
  "oklch": {
    "l": 0.58029,
    "c": 0.13661,
    "h": 251.6
  },
  "luminance": 0.19541
}

Semantic roles & 50–950 ramp

primary

#337DC8

secondary

#CEAC89

accent

#9445E3

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #337DC8

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

Preview Lab → · Contrast checker → · Palette generator →