#3641B7#3641B7

#3641B7 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.5% C 0.184 H 272.3°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#3641B7
RGB	rgb(54, 65, 183)
HSL	hsl(235, 54%, 46%)
HSV	hsv(235, 70%, 72%)
CMYK	cmyk(70.5%, 64.5%, 0%, 28.2%)
CIE-LAB	lab(33.95, 35.24, -63.63)
CIE-LCH	lch(33.95, 72.74, 298.98°)
OKLab	oklab(44.48% 0.0073 -0.1838)
OKLCH	oklch(44.48% 0.184 272.3)
XYZ	xyz(11.9560, 7.9826, 45.7013)
Luminance	0.0798 (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

#3641B7 #B7AC36

analogous

#3682B7 #3641B7 #6C36B7

triadic

#3641B7 #B73641 #41B736

tetradic

#3641B7 #B73682 #B7AC36 #36B76C

square

#3641B7 #B73682 #B7AC36 #36B76C

split-complementary

#3641B7 #B76C36 #82B736

monochromatic

#1A1F58 #283088 #3641B7 #5B65CF #8B92DD

Accessibility & contrast

On white

8.09

#3641B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3641B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3641B7

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3641B7	#FFFFFF	#000000	##FFFFFF
##3641B7	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BB

Deuteranopia (green-blind)

#004AB5

Tritanopia (blue-blind)

#006076

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3641b7;
/* rgb */ color: rgb(54, 65, 183);
/* oklch */ color: oklch(44.5% 0.184 272.3);

Tailwind

colors: {
  custom: {
    50: '#7f76ce',
    500: '#3641b7',
    950: '#000000',
  },
}

SCSS

$custom: #3641b7;
$custom-light: #7f76ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3641b7",
  "rgb": {
    "r": 54,
    "g": 65,
    "b": 183
  },
  "hsl": {
    "h": 234.884,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44477,
    "c": 0.18391,
    "h": 272.3
  },
  "luminance": 0.07984
}

Semantic roles & 50–950 ramp

primary

#3641B7

secondary

#C7C182

accent

#D14ADE

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3641B7

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

Preview Lab → · Contrast checker → · Palette generator →