#3737DA#3737DA

#3737DA is a mid, highly saturated blue. Relative luminance 0.086; OKLCH L 46.4% C 0.237 H 272.2°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#3737DA
RGB	rgb(55, 55, 218)
HSL	hsl(240, 69%, 54%)
HSV	hsv(240, 75%, 85%)
CMYK	cmyk(74.8%, 74.8%, 0%, 14.5%)
CIE-LAB	lab(35.21, 52.97, -81.95)
CIE-LCH	lch(35.21, 97.58, 302.88°)
OKLab	oklab(46.41% 0.0093 -0.2372)
OKLCH	oklch(46.41% 0.237 272.2)
XYZ	xyz(15.5924, 8.6049, 67.1552)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3737DA #DADA37

analogous

#3788DA #3737DA #8837DA

triadic

#3737DA #DA3737 #37DA37

tetradic

#3737DA #DA3788 #DADA37 #37DA88

square

#3737DA #DA3788 #DADA37 #37DA88

split-complementary

#3737DA #DA8837 #88DA37

monochromatic

#18187F #2121B3 #3737DA #6B6BE4 #9E9EED

Accessibility & contrast

On white

7.72

#3737DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3737DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737DA

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737DA	#FFFFFF	#000000	##FFFFFF
##3737DA	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BDF

Deuteranopia (green-blind)

#004BD7

Tritanopia (blue-blind)

#006786

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3737da;
/* rgb */ color: rgb(55, 55, 218);
/* oklch */ color: oklch(46.4% 0.237 272.2);

Tailwind

colors: {
  custom: {
    50: '#8870e7',
    500: '#3737da',
    950: '#000000',
  },
}

SCSS

$custom: #3737da;
$custom-light: #8870e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3737da",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 218
  },
  "hsl": {
    "h": 240,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.4641,
    "c": 0.23737,
    "h": 272.2
  },
  "luminance": 0.08607
}

Semantic roles & 50–950 ramp

primary

#3737DA

secondary

#D9D993

accent

#EC3CEC

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3737DA

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

Preview Lab → · Contrast checker → · Palette generator →