#3640AD#3640AD

#3640AD is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.172 H 272.9°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#3640AD
RGB	rgb(54, 64, 173)
HSL	hsl(235, 52%, 45%)
HSV	hsv(235, 69%, 68%)
CMYK	cmyk(68.8%, 63%, 0%, 32.2%)
CIE-LAB	lab(32.85, 32.33, -59.49)
CIE-LCH	lch(32.85, 67.71, 298.53°)
OKLab	oklab(43.41% 0.0086 -0.1716)
OKLCH	oklch(43.41% 0.172 272.9)
XYZ	xyz(10.8950, 7.4672, 40.3942)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.84

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640AD #ADA336

analogous

#367CAD #3640AD #6836AD

triadic

#3640AD #AD3640 #40AD36

tetradic

#3640AD #AD367C #ADA336 #36AD68

square

#3640AD #AD367C #ADA336 #36AD68

split-complementary

#3640AD #AD6836 #7CAD36

monochromatic

#191D50 #272F7E #3640AD #5660CA #858CD9

Accessibility & contrast

On white

8.42

#3640AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3640AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640AD

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640AD	#FFFFFF	#000000	##FFFFFF
##3640AD	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B1

Deuteranopia (green-blind)

#0048AB

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3640ad;
/* rgb */ color: rgb(54, 64, 173);
/* oklch */ color: oklch(43.4% 0.172 272.9);

Tailwind

colors: {
  custom: {
    50: '#7c75c6',
    500: '#3640ad',
    950: '#000000',
  },
}

SCSS

$custom: #3640ad;
$custom-light: #7c75c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3640ad",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 173
  },
  "hsl": {
    "h": 234.958,
    "s": 52.423,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43406,
    "c": 0.17185,
    "h": 272.9
  },
  "luminance": 0.07468
}

Semantic roles & 50–950 ramp

primary

#3640AD

secondary

#C2BD7C

accent

#D04CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3640AD

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

Preview Lab → · Contrast checker → · Palette generator →