#3640AE#3640AE

#3640AE is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.173 H 272.8°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#3640AE
RGB	rgb(54, 64, 174)
HSL	hsl(235, 53%, 45%)
HSV	hsv(235, 69%, 68%)
CMYK	cmyk(69%, 63.2%, 0%, 31.8%)
CIE-LAB	lab(32.93, 32.69, -59.95)
CIE-LCH	lch(32.93, 68.28, 298.60°)
OKLab	oklab(43.49% 0.0085 -0.173)
OKLCH	oklch(43.49% 0.173 272.8)
XYZ	xyz(10.9921, 7.5060, 40.9057)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640AE #AEA436

analogous

#367CAE #3640AE #6836AE

triadic

#3640AE #AE3640 #40AE36

tetradic

#3640AE #AE367C #AEA436 #36AE68

square

#3640AE #AE367C #AEA436 #36AE68

split-complementary

#3640AE #AE6836 #7CAE36

monochromatic

#191E51 #282F7F #3640AE #5660CB #858CD9

Accessibility & contrast

On white

8.40

#3640AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3640AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640AE

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640AE	#FFFFFF	#000000	##FFFFFF
##3640AE	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B2

Deuteranopia (green-blind)

#0048AC

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3640ae;
/* rgb */ color: rgb(54, 64, 174);
/* oklch */ color: oklch(43.5% 0.173 272.8);

Tailwind

colors: {
  custom: {
    50: '#7d75c7',
    500: '#3640ae',
    950: '#000000',
  },
}

SCSS

$custom: #3640ae;
$custom-light: #7d75c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3640ae",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 174
  },
  "hsl": {
    "h": 235,
    "s": 52.632,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43494,
    "c": 0.17319,
    "h": 272.8
  },
  "luminance": 0.07507
}

Semantic roles & 50–950 ramp

primary

#3640AE

secondary

#C3BD7D

accent

#D04CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3640AE

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

Preview Lab → · Contrast checker → · Palette generator →