#3640AC#3640AC

#3640AC is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.171 H 272.9°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#3640AC
RGB	rgb(54, 64, 172)
HSL	hsl(235, 52%, 44%)
HSV	hsv(235, 69%, 67%)
CMYK	cmyk(68.6%, 62.8%, 0%, 32.5%)
CIE-LAB	lab(32.76, 31.98, -59.03)
CIE-LCH	lch(32.76, 67.14, 298.45°)
OKLab	oklab(43.32% 0.0086 -0.1703)
OKLCH	oklch(43.32% 0.171 272.9)
XYZ	xyz(10.7986, 7.4286, 39.8865)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640AC #ACA236

analogous

#367BAC #3640AC #6736AC

triadic

#3640AC #AC3640 #40AC36

tetradic

#3640AC #AC367B #ACA236 #36AC67

square

#3640AC #AC367B #ACA236 #36AC67

split-complementary

#3640AC #AC6736 #7BAC36

monochromatic

#191D4F #272F7D #3640AC #555FCA #848BD8

Accessibility & contrast

On white

8.45

#3640AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3640AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640AC

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640AC	#FFFFFF	#000000	##FFFFFF
##3640AC	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AF

Deuteranopia (green-blind)

#0048AA

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3640ac;
/* rgb */ color: rgb(54, 64, 172);
/* oklch */ color: oklch(43.3% 0.171 272.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3640ac",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 172
  },
  "hsl": {
    "h": 234.915,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43318,
    "c": 0.17051,
    "h": 272.9
  },
  "luminance": 0.0743
}

Semantic roles & 50–950 ramp

primary

#3640AC

secondary

#C2BC7C

accent

#CF4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3640AC

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

Preview Lab → · Contrast checker → · Palette generator →