#337ECE#337ECE

#337ECE is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.6% C 0.143 H 252.8°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#337ECE
RGB	rgb(51, 126, 206)
HSL	hsl(211, 61%, 50%)
HSV	hsv(211, 75%, 81%)
CMYK	cmyk(75.2%, 38.8%, 0%, 19.2%)
CIE-LAB	lab(51.93, 4.42, -47.94)
CIE-LCH	lch(51.93, 48.15, 275.27°)
OKLab	oklab(58.61% -0.0424 -0.1368)
OKLCH	oklch(58.61% 0.143 252.8)
XYZ	xyz(19.9625, 20.0794, 61.2042)
Luminance	0.2008 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337ECE #CE8333

analogous

#33CBCE #337ECE #3533CE

triadic

#337ECE #CE337E #7ECE33

tetradic

#337ECE #CE33CB #CE8333 #33CE35

square

#337ECE #CE33CB #CE8333 #33CE35

split-complementary

#337ECE #CE3533 #CBCE33

monochromatic

#1A426D #26609E #337ECE #649DDA #96BCE6

Accessibility & contrast

On white

4.19

#337ECE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#337ECE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337ECE

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337ECE	#FFFFFF	#000000	##000000
##337ECE	1.00	4.19	5.02	5.02
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5884D1

Deuteranopia (green-blind)

#4075CC

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #337ece;
/* rgb */ color: rgb(51, 126, 206);
/* oklch */ color: oklch(58.6% 0.143 252.8);

Tailwind

colors: {
  custom: {
    50: '#7fa2dd',
    500: '#337ece',
    950: '#000000',
  },
}

SCSS

$custom: #337ece;
$custom-light: #7fa2dd;
$custom-dark: #000000;

JSON

{
  "hex": "#337ece",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 206
  },
  "hsl": {
    "h": 210.968,
    "s": 61.265,
    "l": 50.392
  },
  "oklch": {
    "l": 0.58615,
    "c": 0.14322,
    "h": 252.8
  },
  "luminance": 0.20082
}

Semantic roles & 50–950 ramp

primary

#337ECE

secondary

#D1B08C

accent

#9643E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #337ECE

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

Preview Lab → · Contrast checker → · Palette generator →