#3639C4#3639C4

#3639C4 is a dark, highly saturated blue. Relative luminance 0.077; OKLCH L 44.4% C 0.209 H 273.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#3639C4
RGB	rgb(54, 57, 196)
HSL	hsl(239, 57%, 49%)
HSV	hsv(239, 72%, 77%)
CMYK	cmyk(72.4%, 70.9%, 0%, 23.1%)
CIE-LAB	lab(33.34, 44.58, -72.28)
CIE-LCH	lch(33.34, 84.92, 301.67°)
OKLab	oklab(44.4% 0.0109 -0.2091)
OKLCH	oklch(44.4% 0.209 273)
XYZ	xyz(12.9449, 7.6947, 53.0169)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.26

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3639C4 #C4C136

analogous

#3680C4 #3639C4 #7A36C4

triadic

#3639C4 #C43639 #39C436

tetradic

#3639C4 #C43680 #C4C136 #36C47A

square

#3639C4 #C43680 #C4C136 #36C47A

split-complementary

#3639C4 #C47A36 #80C436

monochromatic

#1C1D64 #292B94 #3639C4 #6366D4 #9395E1

Accessibility & contrast

On white

8.27

#3639C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3639C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639C4

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639C4	#FFFFFF	#000000	##FFFFFF
##3639C4	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C8

Deuteranopia (green-blind)

#0048C1

Tritanopia (blue-blind)

#00607A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3639c4;
/* rgb */ color: rgb(54, 57, 196);
/* oklch */ color: oklch(44.4% 0.209 273.0);

Tailwind

colors: {
  custom: {
    50: '#8270d7',
    500: '#3639c4',
    950: '#000000',
  },
}

SCSS

$custom: #3639c4;
$custom-light: #8270d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3639c4",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 196
  },
  "hsl": {
    "h": 238.732,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.44401,
    "c": 0.20935,
    "h": 273
  },
  "luminance": 0.07696
}

Semantic roles & 50–950 ramp

primary

#3639C4

secondary

#CCCB89

accent

#DD48E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3639C4

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

Preview Lab → · Contrast checker → · Palette generator →