#3729BA#3729BA

#3729BA is a dark, highly saturated blue. Relative luminance 0.059; OKLCH L 41.2% C 0.212 H 276.0°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#3729BA
RGB	rgb(55, 41, 186)
HSL	hsl(246, 64%, 45%)
HSV	hsv(246, 78%, 73%)
CMYK	cmyk(70.4%, 78%, 0%, 27.1%)
CIE-LAB	lab(29.27, 50.23, -73.11)
CIE-LCH	lch(29.27, 88.70, 304.49°)
OKLab	oklab(41.23% 0.022 -0.2113)
OKLCH	oklch(41.23% 0.212 276)
XYZ	xyz(11.2285, 5.9422, 47.0001)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729BA #ACBA29

analogous

#2964BA #3729BA #8029BA

triadic

#3729BA #BA3729 #29BA37

tetradic

#3729BA #BA2964 #ACBA29 #29BA80

square

#3729BA #BA2964 #ACBA29 #29BA80

split-complementary

#3729BA #BA8029 #64BA29

monochromatic

#191356 #281E88 #3729BA #5749D7 #857BE2

Accessibility & contrast

On white

9.60

#3729BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#3729BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729BA

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729BA	#FFFFFF	#000000	##FFFFFF
##3729BA	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBE

Deuteranopia (green-blind)

#003EB7

Tritanopia (blue-blind)

#005571

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3729ba;
/* rgb */ color: rgb(55, 41, 186);
/* oklch */ color: oklch(41.2% 0.212 276.0);

Tailwind

colors: {
  custom: {
    50: '#8266d0',
    500: '#3729ba',
    950: '#000000',
  },
}

SCSS

$custom: #3729ba;
$custom-light: #8266d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3729ba",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 186
  },
  "hsl": {
    "h": 245.793,
    "s": 63.877,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41227,
    "c": 0.21249,
    "h": 276
  },
  "luminance": 0.05943
}

Semantic roles & 50–950 ramp

primary

#3729BA

secondary

#C2CA75

accent

#E741D7

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0614

muted

#7D7A83

Preview Lab

Preview with #3729BA

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

Preview Lab → · Contrast checker → · Palette generator →