#3643AD#3643AD

#3643AD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.0% C 0.168 H 272.1°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3643AD
RGB	rgb(54, 67, 173)
HSL	hsl(233, 52%, 45%)
HSV	hsv(233, 69%, 68%)
CMYK	cmyk(68.8%, 61.3%, 0%, 32.2%)
CIE-LAB	lab(33.59, 30.40, -58.27)
CIE-LCH	lch(33.59, 65.72, 297.55°)
OKLab	oklab(43.96% 0.0062 -0.168)
OKLCH	oklch(43.96% 0.168 272.1)
XYZ	xyz(11.0688, 7.8147, 40.4521)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.26

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3643AD #ADA036

analogous

#367FAD #3643AD #6436AD

triadic

#3643AD #AD3643 #43AD36

tetradic

#3643AD #AD367F #ADA036 #36AD64

square

#3643AD #AD367F #ADA036 #36AD64

split-complementary

#3643AD #AD6436 #7FAD36

monochromatic

#191F50 #27317E #3643AD #5663CA #858ED9

Accessibility & contrast

On white

8.19

#3643AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3643AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3643AD

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3643AD	#FFFFFF	#000000	##FFFFFF
##3643AD	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B0

Deuteranopia (green-blind)

#004AAB

Tritanopia (blue-blind)

#005E71

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3643ad;
/* rgb */ color: rgb(54, 67, 173);
/* oklch */ color: oklch(44.0% 0.168 272.1);

Tailwind

colors: {
  custom: {
    50: '#7c77c6',
    500: '#3643ad',
    950: '#000000',
  },
}

SCSS

$custom: #3643ad;
$custom-light: #7c77c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3643ad",
  "rgb": {
    "r": 54,
    "g": 67,
    "b": 173
  },
  "hsl": {
    "h": 233.445,
    "s": 52.423,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43956,
    "c": 0.16816,
    "h": 272.1
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary

#3643AD

secondary

#C2BB7C

accent

#CC4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3643AD

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

Preview Lab → · Contrast checker → · Palette generator →