#3648BB#3648BB

#3648BB is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.1% C 0.181 H 270.7°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#3648BB
RGB	rgb(54, 72, 187)
HSL	hsl(232, 55%, 47%)
HSV	hsv(232, 71%, 73%)
CMYK	cmyk(71.1%, 61.5%, 0%, 26.7%)
CIE-LAB	lab(36.00, 32.21, -62.64)
CIE-LCH	lch(36.00, 70.43, 297.21°)
OKLab	oklab(46.09% 0.0021 -0.1808)
OKLCH	oklch(46.09% 0.181 270.7)
XYZ	xyz(12.8053, 9.0056, 48.0675)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3648BB #BBA936

analogous

#368ABB #3648BB #6736BB

triadic

#3648BB #BB3648 #48BB36

tetradic

#3648BB #BB368A #BBA936 #36BB67

square

#3648BB #BB368A #BBA936 #36BB67

split-complementary

#3648BB #BB6736 #8ABB36

monochromatic

#1B235C #28368C #3648BB #5E6DD0 #8D98DE

Accessibility & contrast

On white

7.50

#3648BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3648BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3648BB

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3648BB	#FFFFFF	#000000	##FFFFFF
##3648BB	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBF

Deuteranopia (green-blind)

#004FB9

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3648bb;
/* rgb */ color: rgb(54, 72, 187);
/* oklch */ color: oklch(46.1% 0.181 270.7);

Tailwind

colors: {
  custom: {
    50: '#7f7bd0',
    500: '#3648bb',
    950: '#000000',
  },
}

SCSS

$custom: #3648bb;
$custom-light: #7f7bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3648bb",
  "rgb": {
    "r": 54,
    "g": 72,
    "b": 187
  },
  "hsl": {
    "h": 231.88,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46089,
    "c": 0.18082,
    "h": 270.7
  },
  "luminance": 0.09007
}

Semantic roles & 50–950 ramp

primary

#3648BB

secondary

#C9BF84

accent

#CA49DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3648BB

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

Preview Lab → · Contrast checker → · Palette generator →