#3640C4#3640C4

#3640C4 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.5% C 0.202 H 272.0°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#3640C4
RGB	rgb(54, 64, 196)
HSL	hsl(236, 57%, 49%)
HSV	hsv(236, 72%, 77%)
CMYK	cmyk(72.4%, 67.3%, 0%, 23.1%)
CIE-LAB	lab(34.87, 40.40, -69.75)
CIE-LCH	lch(34.87, 80.61, 300.08°)
OKLab	oklab(45.51% 0.0069 -0.2017)
OKLCH	oklch(45.51% 0.202 272)
XYZ	xyz(13.3152, 8.4352, 53.1403)
Luminance	0.0844 (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

#3640C4 #C4BA36

analogous

#3687C4 #3640C4 #7336C4

triadic

#3640C4 #C43640 #40C436

tetradic

#3640C4 #C43687 #C4BA36 #36C473

square

#3640C4 #C43687 #C4BA36 #36C473

split-complementary

#3640C4 #C47336 #87C436

monochromatic

#1C2164 #293094 #3640C4 #636BD4 #9399E1

Accessibility & contrast

On white

7.81

#3640C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3640C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640C4

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640C4	#FFFFFF	#000000	##FFFFFF
##3640C4	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C8

Deuteranopia (green-blind)

#004BC2

Tritanopia (blue-blind)

#00647D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3640c4;
/* rgb */ color: rgb(54, 64, 196);
/* oklch */ color: oklch(45.5% 0.202 272.0);

Tailwind

colors: {
  custom: {
    50: '#8275d7',
    500: '#3640c4',
    950: '#000000',
  },
}

SCSS

$custom: #3640c4;
$custom-light: #8275d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3640c4",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 196
  },
  "hsl": {
    "h": 235.775,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.45508,
    "c": 0.20182,
    "h": 272
  },
  "luminance": 0.08437
}

Semantic roles & 50–950 ramp

primary

#3640C4

secondary

#CCC889

accent

#D548E0

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3640C4

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

Preview Lab → · Contrast checker → · Palette generator →