#3727A4#3727A4

#3727A4 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 38.6% C 0.188 H 278.7°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#3727A4
RGB	rgb(55, 39, 164)
HSL	hsl(248, 62%, 40%)
HSV	hsv(248, 76%, 64%)
CMYK	cmyk(66.5%, 76.2%, 0%, 35.7%)
CIE-LAB	lab(26.57, 44.40, -64.38)
CIE-LCH	lch(26.57, 78.20, 304.59°)
OKLab	oklab(38.64% 0.0285 -0.1859)
OKLCH	oklch(38.64% 0.188 278.7)
XYZ	xyz(8.9998, 4.9429, 35.5946)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3727A4 #94A427

analogous

#2756A4 #3727A4 #7627A4

triadic

#3727A4 #A43727 #27A437

tetradic

#3727A4 #A42756 #94A427 #27A476

square

#3727A4 #A42756 #94A427 #27A476

split-complementary

#3727A4 #A47627 #56A427

monochromatic

#160F41 #261B73 #3727A4 #4C38D0 #786ADC

Accessibility & contrast

On white

10.56

#3727A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#3727A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3727A4

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3727A4	#FFFFFF	#000000	##FFFFFF
##3727A4	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A8

Deuteranopia (green-blind)

#003AA2

Tritanopia (blue-blind)

#004B64

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #3727a4;
/* rgb */ color: rgb(55, 39, 164);
/* oklch */ color: oklch(38.6% 0.188 278.7);

Tailwind

colors: {
  custom: {
    50: '#7d64c0',
    500: '#3727a4',
    950: '#000000',
  },
}

SCSS

$custom: #3727a4;
$custom-light: #7d64c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3727a4",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 164
  },
  "hsl": {
    "h": 247.68,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38644,
    "c": 0.18807,
    "h": 278.7
  },
  "luminance": 0.04944
}

Semantic roles & 50–950 ramp

primary

#3727A4

secondary

#B6C265

accent

#E543D0

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #3727A4

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

Preview Lab → · Contrast checker → · Palette generator →