#3739D6#3739D6

#3739D6 is a mid, highly saturated blue. Relative luminance 0.086; OKLCH L 46.3% C 0.231 H 272.3°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#3739D6
RGB	rgb(55, 57, 214)
HSL	hsl(239, 66%, 53%)
HSV	hsv(239, 74%, 84%)
CMYK	cmyk(74.3%, 73.4%, 0%, 16.1%)
CIE-LAB	lab(35.19, 50.60, -79.69)
CIE-LCH	lch(35.19, 94.39, 302.42°)
OKLab	oklab(46.27% 0.0092 -0.2306)
OKLCH	oklch(46.27% 0.231 272.3)
XYZ	xyz(15.1722, 8.5919, 64.4641)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.37

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3739D6 #D6D437

analogous

#3789D6 #3739D6 #8437D6

triadic

#3739D6 #D63739 #39D637

tetradic

#3739D6 #D63789 #D6D437 #37D684

square

#3739D6 #D63789 #D6D437 #37D684

split-complementary

#3739D6 #D68437 #89D637

monochromatic

#191A7A #2325AC #3739D6 #6A6BE0 #9D9EEB

Accessibility & contrast

On white

7.72

#3739D6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3739D6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3739D6

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3739D6	#FFFFFF	#000000	##FFFFFF
##3739D6	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)

#005ADB

Deuteranopia (green-blind)

#004BD3

Tritanopia (blue-blind)

#006785

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3739d6;
/* rgb */ color: rgb(55, 57, 214);
/* oklch */ color: oklch(46.3% 0.231 272.3);

Tailwind

colors: {
  custom: {
    50: '#8771e4',
    500: '#3739d6',
    950: '#000000',
  },
}

SCSS

$custom: #3739d6;
$custom-light: #8771e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3739d6",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 214
  },
  "hsl": {
    "h": 239.245,
    "s": 65.975,
    "l": 52.745
  },
  "oklch": {
    "l": 0.4627,
    "c": 0.23081,
    "h": 272.3
  },
  "luminance": 0.08594
}

Semantic roles & 50–950 ramp

primary

#3739D6

secondary

#D7D692

accent

#E73FE9

background

#F9F6FE

surface

#F1ECFC

border

#CBC7D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3739D6

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

Preview Lab → · Contrast checker → · Palette generator →