#3644B7#3644B7

#3644B7 is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.0% C 0.180 H 271.6°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#3644B7
RGB	rgb(54, 68, 183)
HSL	hsl(233, 54%, 46%)
HSV	hsv(233, 70%, 72%)
CMYK	cmyk(70.5%, 62.8%, 0%, 28.2%)
CIE-LAB	lab(34.67, 33.33, -62.44)
CIE-LCH	lch(34.67, 70.78, 298.10°)
OKLab	oklab(45.01% 0.0051 -0.1803)
OKLCH	oklch(45.01% 0.18 271.6)
XYZ	xyz(12.1328, 8.3362, 45.7602)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.45

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3644B7 #B7A936

analogous

#3685B7 #3644B7 #6936B7

triadic

#3644B7 #B73644 #44B736

tetradic

#3644B7 #B73685 #B7A936 #36B769

square

#3644B7 #B73685 #B7A936 #36B769

split-complementary

#3644B7 #B76936 #85B736

monochromatic

#1A2158 #283288 #3644B7 #5B68CF #8B94DD

Accessibility & contrast

On white

7.87

#3644B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3644B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3644B7

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3644B7	#FFFFFF	#000000	##FFFFFF
##3644B7	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BB

Deuteranopia (green-blind)

#004CB5

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3644b7;
/* rgb */ color: rgb(54, 68, 183);
/* oklch */ color: oklch(45.0% 0.180 271.6);

Tailwind

colors: {
  custom: {
    50: '#7e78ce',
    500: '#3644b7',
    950: '#000000',
  },
}

SCSS

$custom: #3644b7;
$custom-light: #7e78ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3644b7",
  "rgb": {
    "r": 54,
    "g": 68,
    "b": 183
  },
  "hsl": {
    "h": 233.488,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.45011,
    "c": 0.18034,
    "h": 271.6
  },
  "luminance": 0.08337
}

Semantic roles & 50–950 ramp

primary

#3644B7

secondary

#C7BF82

accent

#CE4ADE

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3644B7

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

Preview Lab → · Contrast checker → · Palette generator →