#3727B0#3727B0

#3727B0 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 39.9% C 0.202 H 277.2°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#3727B0
RGB	rgb(55, 39, 176)
HSL	hsl(247, 64%, 42%)
HSV	hsv(247, 78%, 69%)
CMYK	cmyk(68.8%, 77.8%, 0%, 31%)
CIE-LAB	lab(27.84, 48.15, -69.51)
CIE-LCH	lch(27.84, 84.56, 304.71°)
OKLab	oklab(39.91% 0.0255 -0.2009)
OKLCH	oklch(39.91% 0.202 277.2)
XYZ	xyz(10.1350, 5.3969, 41.5735)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3727B0 #A0B027

analogous

#275CB0 #3727B0 #7B27B0

triadic

#3727B0 #B03727 #27B037

tetradic

#3727B0 #B0275C #A0B027 #27B07B

square

#3727B0 #B0275C #A0B027 #27B07B

split-complementary

#3727B0 #B07B27 #5CB027

monochromatic

#18114C #271C7E #3727B0 #5140D5 #7F72E0

Accessibility & contrast

On white

10.10

#3727B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3727B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3727B0

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3727B0	#FFFFFF	#000000	##FFFFFF
##3727B0	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B4

Deuteranopia (green-blind)

#003CAE

Tritanopia (blue-blind)

#00506B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3727b0;
/* rgb */ color: rgb(55, 39, 176);
/* oklch */ color: oklch(39.9% 0.202 277.2);

Tailwind

colors: {
  custom: {
    50: '#8065c9',
    500: '#3727b0',
    950: '#000000',
  },
}

SCSS

$custom: #3727b0;
$custom-light: #8065c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3727b0",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 176
  },
  "hsl": {
    "h": 247.007,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.39909,
    "c": 0.20248,
    "h": 277.2
  },
  "luminance": 0.05398
}

Semantic roles & 50–950 ramp

primary

#3727B0

secondary

#BCC76C

accent

#E741D3

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3727B0

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

Preview Lab → · Contrast checker → · Palette generator →