#3645B8#3645B8

#3645B8 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.3% C 0.180 H 271.4°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#3645B8
RGB	rgb(54, 69, 184)
HSL	hsl(233, 55%, 47%)
HSV	hsv(233, 71%, 72%)
CMYK	cmyk(70.7%, 62.5%, 0%, 27.8%)
CIE-LAB	lab(35.00, 33.05, -62.49)
CIE-LCH	lch(35.00, 70.69, 297.87°)
OKLab	oklab(45.28% 0.0044 -0.1804)
OKLCH	oklch(45.28% 0.18 271.4)
XYZ	xyz(12.2982, 8.5000, 46.3306)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.55

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3645B8 #B8A936

analogous

#3686B8 #3645B8 #6836B8

triadic

#3645B8 #B83645 #45B836

tetradic

#3645B8 #B83686 #B8A936 #36B868

square

#3645B8 #B83686 #B8A936 #36B868

split-complementary

#3645B8 #B86836 #86B836

monochromatic

#1A2259 #283389 #3645B8 #5C69CF #8B95DD

Accessibility & contrast

On white

7.78

#3645B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3645B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3645B8

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3645B8	#FFFFFF	#000000	##FFFFFF
##3645B8	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BC

Deuteranopia (green-blind)

#004CB6

Tritanopia (blue-blind)

#006278

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3645b8;
/* rgb */ color: rgb(54, 69, 184);
/* oklch */ color: oklch(45.3% 0.180 271.4);

Tailwind

colors: {
  custom: {
    50: '#7e78ce',
    500: '#3645b8',
    950: '#000000',
  },
}

SCSS

$custom: #3645b8;
$custom-light: #7e78ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3645b8",
  "rgb": {
    "r": 54,
    "g": 69,
    "b": 184
  },
  "hsl": {
    "h": 233.077,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4528,
    "c": 0.18046,
    "h": 271.4
  },
  "luminance": 0.08501
}

Semantic roles & 50–950 ramp

primary

#3645B8

secondary

#C7BF82

accent

#CD4ADE

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3645B8

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

Preview Lab → · Contrast checker → · Palette generator →