#3639BA#3639BA

#3639BA is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.197 H 273.6°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#3639BA
RGB	rgb(54, 57, 186)
HSL	hsl(239, 55%, 47%)
HSV	hsv(239, 71%, 73%)
CMYK	cmyk(71%, 69.4%, 0%, 27.1%)
CIE-LAB	lab(32.38, 41.21, -67.97)
CIE-LCH	lch(32.38, 79.49, 301.23°)
OKLab	oklab(43.42% 0.0123 -0.1965)
OKLCH	oklch(43.42% 0.197 273.6)
XYZ	xyz(11.8444, 7.2545, 47.2209)
Luminance	0.0726 (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

#3639BA #BAB736

analogous

#367BBA #3639BA #7536BA

triadic

#3639BA #BA3639 #39BA36

tetradic

#3639BA #BA367B #BAB736 #36BA75

square

#3639BA #BA367B #BAB736 #36BA75

split-complementary

#3639BA #BA7536 #7BBA36

monochromatic

#1A1C5B #282A8B #3639BA #5D60D0 #8D8EDE

Accessibility & contrast

On white

8.57

#3639BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3639BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639BA

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639BA	#FFFFFF	#000000	##FFFFFF
##3639BA	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BE

Deuteranopia (green-blind)

#0046B8

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3639ba;
/* rgb */ color: rgb(54, 57, 186);
/* oklch */ color: oklch(43.4% 0.197 273.6);

Tailwind

colors: {
  custom: {
    50: '#8070d0',
    500: '#3639ba',
    950: '#000000',
  },
}

SCSS

$custom: #3639ba;
$custom-light: #8070d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3639ba",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 186
  },
  "hsl": {
    "h": 238.636,
    "s": 55,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43422,
    "c": 0.19689,
    "h": 273.6
  },
  "luminance": 0.07256
}

Semantic roles & 50–950 ramp

primary

#3639BA

secondary

#C8C784

accent

#DB49DE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3639BA

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

Preview Lab → · Contrast checker → · Palette generator →