#337CDB#337CDB

#337CDB is a mid, vivid cyan. Relative luminance 0.202; OKLCH L 59.0% C 0.162 H 256.5°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#337CDB
RGB	rgb(51, 124, 219)
HSL	hsl(214, 70%, 53%)
HSV	hsv(214, 77%, 86%)
CMYK	cmyk(76.7%, 43.4%, 0%, 14.1%)
CIE-LAB	lab(52.10, 10.44, -55.03)
CIE-LCH	lch(52.10, 56.01, 280.74°)
OKLab	oklab(58.99% -0.0379 -0.1576)
OKLCH	oklch(58.99% 0.162 256.5)
XYZ	xyz(21.3544, 20.2311, 69.7836)
Luminance	0.2023 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CDB #DB9233

analogous

#33D0DB #337CDB #3E33DB

triadic

#337CDB #DB337C #7CDB33

tetradic

#337CDB #DB33D0 #DB9233 #33DB3E

square

#337CDB #DB33D0 #DB9233 #33DB3E

split-complementary

#337CDB #DB3E33 #D0DB33

monochromatic

#16437D #1F5FB1 #337CDB #679DE4 #9BBFED

Accessibility & contrast

On white

4.16

#337CDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#337CDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337CDB

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CDB	#FFFFFF	#000000	##000000
##337CDB	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C84DF

Deuteranopia (green-blind)

#2B75D9

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #337cdb;
/* rgb */ color: rgb(51, 124, 219);
/* oklch */ color: oklch(59.0% 0.162 256.5);

Tailwind

colors: {
  custom: {
    50: '#82a1e7',
    500: '#337cdb',
    950: '#000000',
  },
}

SCSS

$custom: #337cdb;
$custom-light: #82a1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#337cdb",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 219
  },
  "hsl": {
    "h": 213.929,
    "s": 70,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58988,
    "c": 0.16213,
    "h": 256.5
  },
  "luminance": 0.20234
}

Semantic roles & 50–950 ramp

primary

#337CDB

secondary

#D9BA91

accent

#A03BED

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #337CDB

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

Preview Lab → · Contrast checker → · Palette generator →