#3731C6#3731C6

#3731C6 is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.5% C 0.219 H 274.1°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#3731C6
RGB	rgb(55, 49, 198)
HSL	hsl(242, 60%, 48%)
HSV	hsv(242, 75%, 78%)
CMYK	cmyk(72.2%, 75.3%, 0%, 22.4%)
CIE-LAB	lab(32.00, 49.82, -75.65)
CIE-LCH	lch(32.00, 90.58, 303.36°)
OKLab	oklab(43.52% 0.0157 -0.2188)
OKLCH	oklch(43.52% 0.219 274.1)
XYZ	xyz(12.8635, 7.0848, 54.1047)
Luminance	0.0709 (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

#3731C6 #C0C631

analogous

#3175C6 #3731C6 #8131C6

triadic

#3731C6 #C63731 #31C637

tetradic

#3731C6 #C63175 #C0C631 #31C681

square

#3731C6 #C63175 #C0C631 #31C681

split-complementary

#3731C6 #C68131 #75C631

monochromatic

#1C1964 #292595 #3731C6 #625DD7 #928EE3

Accessibility & contrast

On white

8.69

#3731C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3731C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3731C6

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3731C6	#FFFFFF	#000000	##FFFFFF
##3731C6	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052CA

Deuteranopia (green-blind)

#0044C3

Tritanopia (blue-blind)

#005D7A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3731c6;
/* rgb */ color: rgb(55, 49, 198);
/* oklch */ color: oklch(43.5% 0.219 274.1);

Tailwind

colors: {
  custom: {
    50: '#846cd9',
    500: '#3731c6',
    950: '#000000',
  },
}

SCSS

$custom: #3731c6;
$custom-light: #846cd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3731c6",
  "rgb": {
    "r": 55,
    "g": 49,
    "b": 198
  },
  "hsl": {
    "h": 242.416,
    "s": 60.324,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43524,
    "c": 0.2194,
    "h": 274.1
  },
  "luminance": 0.07086
}

Semantic roles & 50–950 ramp

primary

#3731C6

secondary

#CBCE85

accent

#E344DD

background

#F8F6FD

surface

#F0EBFB

border

#CBC6D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3731C6

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

Preview Lab → · Contrast checker → · Palette generator →