#3639B7#3639B7

#3639B7 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.1% C 0.193 H 273.8°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#3639B7
RGB	rgb(54, 57, 183)
HSL	hsl(239, 54%, 46%)
HSV	hsv(239, 70%, 72%)
CMYK	cmyk(70.5%, 68.9%, 0%, 28.2%)
CIE-LAB	lab(32.10, 40.19, -66.66)
CIE-LCH	lch(32.10, 77.84, 301.09°)
OKLab	oklab(43.13% 0.0126 -0.1927)
OKLCH	oklch(43.13% 0.193 273.8)
XYZ	xyz(11.5288, 7.1283, 45.5589)
Luminance	0.0713 (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

#3639B7 #B7B436

analogous

#367AB7 #3639B7 #7436B7

triadic

#3639B7 #B73639 #39B736

tetradic

#3639B7 #B7367A #B7B436 #36B774

square

#3639B7 #B7367A #B7B436 #36B774

split-complementary

#3639B7 #B77436 #7AB736

monochromatic

#1A1C58 #282A88 #3639B7 #5B5ECF #8B8DDD

Accessibility & contrast

On white

8.66

#3639B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3639B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639B7

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639B7	#FFFFFF	#000000	##FFFFFF
##3639B7	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BB

Deuteranopia (green-blind)

#0045B5

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3639b7;
/* rgb */ color: rgb(54, 57, 183);
/* oklch */ color: oklch(43.1% 0.193 273.8);

Tailwind

colors: {
  custom: {
    50: '#7f70ce',
    500: '#3639b7',
    950: '#000000',
  },
}

SCSS

$custom: #3639b7;
$custom-light: #7f70ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3639b7",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 183
  },
  "hsl": {
    "h": 238.605,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43132,
    "c": 0.19309,
    "h": 273.8
  },
  "luminance": 0.07129
}

Semantic roles & 50–950 ramp

primary

#3639B7

secondary

#C7C582

accent

#DA4ADE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3639B7

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

Preview Lab → · Contrast checker → · Palette generator →