#3643AA#3643AA

#3643AA is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.7% C 0.164 H 272.2°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#3643AA
RGB	rgb(54, 67, 170)
HSL	hsl(233, 52%, 44%)
HSV	hsv(233, 68%, 67%)
CMYK	cmyk(68.2%, 60.6%, 0%, 33.3%)
CIE-LAB	lab(33.35, 29.32, -56.88)
CIE-LCH	lch(33.35, 63.99, 297.27°)
OKLab	oklab(43.7% 0.0063 -0.164)
OKLCH	oklch(43.7% 0.164 272.2)
XYZ	xyz(10.7817, 7.6999, 38.9404)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3643AA #AA9D36

analogous

#367DAA #3643AA #6336AA

triadic

#3643AA #AA3643 #43AA36

tetradic

#3643AA #AA367D #AA9D36 #36AA63

square

#3643AA #AA367D #AA9D36 #36AA63

split-complementary

#3643AA #AA6336 #7DAA36

monochromatic

#181E4D #27317C #3643AA #5461C9 #838CD8

Accessibility & contrast

On white

8.27

#3643AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3643AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3643AA

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3643AA	#FFFFFF	#000000	##FFFFFF
##3643AA	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054AD

Deuteranopia (green-blind)

#0049A8

Tritanopia (blue-blind)

#005D70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3643aa;
/* rgb */ color: rgb(54, 67, 170);
/* oklch */ color: oklch(43.7% 0.164 272.2);

Tailwind

colors: {
  custom: {
    50: '#7c77c4',
    500: '#3643aa',
    950: '#000000',
  },
}

SCSS

$custom: #3643aa;
$custom-light: #7c77c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3643aa",
  "rgb": {
    "r": 54,
    "g": 67,
    "b": 170
  },
  "hsl": {
    "h": 233.276,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43699,
    "c": 0.16407,
    "h": 272.2
  },
  "luminance": 0.07701
}

Semantic roles & 50–950 ramp

primary

#3643AA

secondary

#C1B97B

accent

#CB4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3643AA

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

Preview Lab → · Contrast checker → · Palette generator →