#3731E2#3731E2

#3731E2 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 46.5% C 0.252 H 272.2°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#3731E2
RGB	rgb(55, 49, 226)
HSL	hsl(242, 75%, 54%)
HSV	hsv(242, 78%, 89%)
CMYK	cmyk(75.7%, 78.3%, 0%, 11.4%)
CIE-LAB	lab(35.00, 58.52, -86.89)
CIE-LCH	lch(35.00, 104.75, 303.96°)
OKLab	oklab(46.51% 0.0099 -0.2515)
OKLCH	oklch(46.51% 0.252 272.2)
XYZ	xyz(16.3967, 8.4981, 72.7129)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3731E2 #DCE231

analogous

#3184E2 #3731E2 #9031E2

triadic

#3731E2 #E23731 #31E237

tetradic

#3731E2 #E23184 #DCE231 #31E290

square

#3731E2 #E23184 #DCE231 #31E290

split-complementary

#3731E2 #E29031 #84E231

monochromatic

#171386 #201ABB #3731E2 #6B67EA #9F9CF1

Accessibility & contrast

On white

7.78

#3731E2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3731E2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3731E2

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3731E2	#FFFFFF	#000000	##FFFFFF
##3731E2	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BE7

Deuteranopia (green-blind)

#0049DF

Tritanopia (blue-blind)

#00688A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3731e2;
/* rgb */ color: rgb(55, 49, 226);
/* oklch */ color: oklch(46.5% 0.252 272.2);

Tailwind

colors: {
  custom: {
    50: '#8a6ded',
    500: '#3731e2',
    950: '#000000',
  },
}

SCSS

$custom: #3731e2;
$custom-light: #8a6ded;
$custom-dark: #000000;

JSON

{
  "hex": "#3731e2",
  "rgb": {
    "r": 55,
    "g": 49,
    "b": 226
  },
  "hsl": {
    "h": 242.034,
    "s": 75.319,
    "l": 53.922
  },
  "oklch": {
    "l": 0.46511,
    "c": 0.25165,
    "h": 272.2
  },
  "luminance": 0.085
}

Semantic roles & 50–950 ramp

primary

#3731E2

secondary

#DBDD92

accent

#F236EC

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0E0717

muted

#7E7A85

Preview Lab

Preview with #3731E2

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

Preview Lab → · Contrast checker → · Palette generator →