#337BD4#337BD4

#337BD4 is a mid, vivid cyan. Relative luminance 0.196; OKLCH L 58.3% C 0.154 H 255.5°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#337BD4
RGB	rgb(51, 123, 212)
HSL	hsl(213, 65%, 52%)
HSV	hsv(213, 76%, 83%)
CMYK	cmyk(75.9%, 42%, 0%, 16.9%)
CIE-LAB	lab(51.41, 8.47, -52.18)
CIE-LCH	lch(51.41, 52.86, 279.22°)
OKLab	oklab(58.32% -0.0385 -0.1493)
OKLCH	oklch(58.32% 0.154 255.5)
XYZ	xyz(20.3275, 19.6208, 64.9905)
Luminance	0.1962 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BD4 #D48C33

analogous

#33CBD4 #337BD4 #3C33D4

triadic

#337BD4 #D4337B #7BD433

tetradic

#337BD4 #D433CB #D48C33 #33D43C

square

#337BD4 #D433CB #D48C33 #33D43C

split-complementary

#337BD4 #D43C33 #CBD433

monochromatic

#184174 #235EA7 #337BD4 #669CDF #98BCE9

Accessibility & contrast

On white

4.26

#337BD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#337BD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BD4

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BD4	#FFFFFF	#000000	##000000
##337BD4	1.00	4.26	4.92	4.92
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F82D7

Deuteranopia (green-blind)

#3374D2

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337bd4;
/* rgb */ color: rgb(51, 123, 212);
/* oklch */ color: oklch(58.3% 0.154 255.5);

Tailwind

colors: {
  custom: {
    50: '#81a0e2',
    500: '#337bd4',
    950: '#000000',
  },
}

SCSS

$custom: #337bd4;
$custom-light: #81a0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#337bd4",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 212
  },
  "hsl": {
    "h": 213.168,
    "s": 65.182,
    "l": 51.569
  },
  "oklch": {
    "l": 0.58319,
    "c": 0.15416,
    "h": 255.5
  },
  "luminance": 0.19623
}

Semantic roles & 50–950 ramp

primary

#337BD4

secondary

#D5B58E

accent

#9D40E8

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #337BD4

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

Preview Lab → · Contrast checker → · Palette generator →