#3641B4#3641B4

#3641B4 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.2% C 0.180 H 272.4°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#3641B4
RGB	rgb(54, 65, 180)
HSL	hsl(235, 54%, 46%)
HSV	hsv(235, 70%, 71%)
CMYK	cmyk(70%, 63.9%, 0%, 29.4%)
CIE-LAB	lab(33.69, 34.18, -62.28)
CIE-LCH	lch(33.69, 71.04, 298.76°)
OKLab	oklab(44.21% 0.0075 -0.1798)
OKLCH	oklch(44.21% 0.18 272.4)
XYZ	xyz(11.6471, 7.8590, 44.0743)
Luminance	0.0786 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3641B4 #B4A936

analogous

#3680B4 #3641B4 #6A36B4

triadic

#3641B4 #B43641 #41B436

tetradic

#3641B4 #B43680 #B4A936 #36B46A

square

#3641B4 #B43680 #B4A936 #36B46A

split-complementary

#3641B4 #B46A36 #80B436

monochromatic

#1A1F56 #283085 #3641B4 #5A64CD #8990DC

Accessibility & contrast

On white

8.16

#3641B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3641B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3641B4

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3641B4	#FFFFFF	#000000	##FFFFFF
##3641B4	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3641b4;
/* rgb */ color: rgb(54, 65, 180);
/* oklch */ color: oklch(44.2% 0.180 272.4);

Tailwind

colors: {
  custom: {
    50: '#7e75cb',
    500: '#3641b4',
    950: '#000000',
  },
}

SCSS

$custom: #3641b4;
$custom-light: #7e75cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3641b4",
  "rgb": {
    "r": 54,
    "g": 65,
    "b": 180
  },
  "hsl": {
    "h": 234.762,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.44207,
    "c": 0.17997,
    "h": 272.4
  },
  "luminance": 0.0786
}

Semantic roles & 50–950 ramp

primary

#3641B4

secondary

#C6C080

accent

#D04BDD

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3641B4

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

Preview Lab → · Contrast checker → · Palette generator →