#3649B8#3649B8

#3649B8 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.0% C 0.176 H 270.5°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#3649B8
RGB	rgb(54, 73, 184)
HSL	hsl(231, 55%, 47%)
HSV	hsv(231, 71%, 72%)
CMYK	cmyk(70.7%, 60.3%, 0%, 27.8%)
CIE-LAB	lab(36.00, 30.48, -60.86)
CIE-LCH	lch(36.00, 68.07, 296.60°)
OKLab	oklab(46.02% 0.0014 -0.1756)
OKLCH	oklch(46.02% 0.176 270.5)
XYZ	xyz(12.5526, 9.0088, 46.4154)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3649B8 #B8A536

analogous

#368AB8 #3649B8 #6436B8

triadic

#3649B8 #B83649 #49B836

tetradic

#3649B8 #B8368A #B8A536 #36B864

square

#3649B8 #B8368A #B8A536 #36B864

split-complementary

#3649B8 #B86436 #8AB836

monochromatic

#1A2359 #283689 #3649B8 #5C6DCF #8B97DD

Accessibility & contrast

On white

7.49

#3649B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3649B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3649B8

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3649B8	#FFFFFF	#000000	##FFFFFF
##3649B8	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBC

Deuteranopia (green-blind)

#004FB6

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3649b8;
/* rgb */ color: rgb(54, 73, 184);
/* oklch */ color: oklch(46.0% 0.176 270.5);

Tailwind

colors: {
  custom: {
    50: '#7e7bce',
    500: '#3649b8',
    950: '#000000',
  },
}

SCSS

$custom: #3649b8;
$custom-light: #7e7bce;
$custom-dark: #000000;

JSON

{
  "hex": "#3649b8",
  "rgb": {
    "r": 54,
    "g": 73,
    "b": 184
  },
  "hsl": {
    "h": 231.231,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.46018,
    "c": 0.1756,
    "h": 270.5
  },
  "luminance": 0.0901
}

Semantic roles & 50–950 ramp

primary

#3649B8

secondary

#C7BD82

accent

#C84ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3649B8

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

Preview Lab → · Contrast checker → · Palette generator →