#3640B2#3640B2

#3640B2 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.9% C 0.179 H 272.7°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#3640B2
RGB	rgb(54, 64, 178)
HSL	hsl(235, 53%, 45%)
HSV	hsv(235, 70%, 70%)
CMYK	cmyk(69.7%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.27, 34.11, -61.77)
CIE-LCH	lch(33.27, 70.56, 298.91°)
OKLab	oklab(43.85% 0.0083 -0.1783)
OKLCH	oklch(43.85% 0.179 272.7)
XYZ	xyz(11.3879, 7.6643, 42.9901)
Luminance	0.0766 (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

#3640B2 #B2A836

analogous

#367EB2 #3640B2 #6A36B2

triadic

#3640B2 #B23640 #40B236

tetradic

#3640B2 #B2367E #B2A836 #36B26A

square

#3640B2 #B2367E #B2A836 #36B26A

split-complementary

#3640B2 #B26A36 #7EB236

monochromatic

#1A1E54 #282F83 #3640B2 #5962CD #888EDB

Accessibility & contrast

On white

8.29

#3640B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3640B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640B2

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640B2	#FFFFFF	#000000	##FFFFFF
##3640B2	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3640b2;
/* rgb */ color: rgb(54, 64, 178);
/* oklch */ color: oklch(43.9% 0.179 272.7);

Tailwind

colors: {
  custom: {
    50: '#7e75ca',
    500: '#3640b2',
    950: '#000000',
  },
}

SCSS

$custom: #3640b2;
$custom-light: #7e75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3640b2",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 235.161,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43851,
    "c": 0.17851,
    "h": 272.7
  },
  "luminance": 0.07665
}

Semantic roles & 50–950 ramp

primary

#3640B2

secondary

#C5BF7F

accent

#D14BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3640B2

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

Preview Lab → · Contrast checker → · Palette generator →