#3639BF#3639BF

#3639BF is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 43.9% C 0.203 H 273.3°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#3639BF
RGB	rgb(54, 57, 191)
HSL	hsl(239, 56%, 48%)
HSV	hsv(239, 72%, 75%)
CMYK	cmyk(71.7%, 70.2%, 0%, 25.1%)
CIE-LAB	lab(32.86, 42.90, -70.14)
CIE-LCH	lch(32.86, 82.22, 301.45°)
OKLab	oklab(43.91% 0.0116 -0.2028)
OKLCH	oklch(43.91% 0.203 273.3)
XYZ	xyz(12.3853, 7.4709, 50.0694)
Luminance	0.0747 (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

#3639BF #BFBC36

analogous

#367DBF #3639BF #7736BF

triadic

#3639BF #BF3639 #39BF36

tetradic

#3639BF #BF367D #BFBC36 #36BF77

square

#3639BF #BF367D #BFBC36 #36BF77

split-complementary

#3639BF #BF7736 #7DBF36

monochromatic

#1B1D60 #292B8F #3639BF #6063D2 #9092E0

Accessibility & contrast

On white

8.42

#3639BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3639BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639BF

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639BF	#FFFFFF	#000000	##FFFFFF
##3639BF	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C3

Deuteranopia (green-blind)

#0047BD

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3639bf;
/* rgb */ color: rgb(54, 57, 191);
/* oklch */ color: oklch(43.9% 0.203 273.3);

Tailwind

colors: {
  custom: {
    50: '#8170d4',
    500: '#3639bf',
    950: '#000000',
  },
}

SCSS

$custom: #3639bf;
$custom-light: #8170d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3639bf",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 191
  },
  "hsl": {
    "h": 238.686,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.43909,
    "c": 0.20316,
    "h": 273.3
  },
  "luminance": 0.07472
}

Semantic roles & 50–950 ramp

primary

#3639BF

secondary

#CAC987

accent

#DC49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3639BF

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

Preview Lab → · Contrast checker → · Palette generator →