#3639B5#3639B5

#3639B5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.191 H 273.9°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#3639B5
RGB	rgb(54, 57, 181)
HSL	hsl(239, 54%, 46%)
HSV	hsv(239, 70%, 71%)
CMYK	cmyk(70.2%, 68.5%, 0%, 29%)
CIE-LAB	lab(31.91, 39.51, -65.78)
CIE-LCH	lch(31.91, 76.74, 300.99°)
OKLab	oklab(42.94% 0.0129 -0.1901)
OKLCH	oklch(42.94% 0.191 273.9)
XYZ	xyz(11.3222, 7.0456, 44.4704)
Luminance	0.0705 (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

#3639B5 #B5B236

analogous

#3678B5 #3639B5 #7236B5

triadic

#3639B5 #B53639 #39B536

tetradic

#3639B5 #B53678 #B5B236 #36B572

square

#3639B5 #B53678 #B5B236 #36B572

split-complementary

#3639B5 #B57236 #78B536

monochromatic

#1A1B57 #282A86 #3639B5 #5A5DCE #898BDC

Accessibility & contrast

On white

8.72

#3639B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3639B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639B5

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639B5	#FFFFFF	#000000	##FFFFFF
##3639B5	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B9

Deuteranopia (green-blind)

#0045B3

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3639b5;
/* rgb */ color: rgb(54, 57, 181);
/* oklch */ color: oklch(42.9% 0.191 273.9);

Tailwind

colors: {
  custom: {
    50: '#7f70cc',
    500: '#3639b5',
    950: '#000000',
  },
}

SCSS

$custom: #3639b5;
$custom-light: #7f70cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3639b5",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 181
  },
  "hsl": {
    "h": 238.583,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42941,
    "c": 0.19055,
    "h": 273.9
  },
  "luminance": 0.07047
}

Semantic roles & 50–950 ramp

primary

#3639B5

secondary

#C6C481

accent

#DA4ADD

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3639B5

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

Preview Lab → · Contrast checker → · Palette generator →