#3640B6#3640B6

#3640B6 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.2% C 0.184 H 272.5°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3640B6
RGB	rgb(54, 64, 182)
HSL	hsl(235, 54%, 46%)
HSV	hsv(235, 70%, 71%)
CMYK	cmyk(70.3%, 64.8%, 0%, 28.6%)
CIE-LAB	lab(33.62, 35.52, -63.57)
CIE-LCH	lch(33.62, 72.82, 299.19°)
OKLab	oklab(44.21% 0.0081 -0.1836)
OKLCH	oklch(44.21% 0.184 272.5)
XYZ	xyz(11.7954, 7.8273, 45.1361)
Luminance	0.0783 (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

#3640B6 #B6AC36

analogous

#3680B6 #3640B6 #6C36B6

triadic

#3640B6 #B63640 #40B636

tetradic

#3640B6 #B63680 #B6AC36 #36B66C

square

#3640B6 #B63680 #B6AC36 #36B66C

split-complementary

#3640B6 #B66C36 #80B636

monochromatic

#1A1F58 #282F87 #3640B6 #5B64CE #8A91DC

Accessibility & contrast

On white

8.19

#3640B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3640B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640B6

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640B6	#FFFFFF	#000000	##FFFFFF
##3640B6	1.00	8.19	2.57	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BA

Deuteranopia (green-blind)

#0049B4

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3640b6;
/* rgb */ color: rgb(54, 64, 182);
/* oklch */ color: oklch(44.2% 0.184 272.5);

Tailwind

colors: {
  custom: {
    50: '#7e75cd',
    500: '#3640b6',
    950: '#000000',
  },
}

SCSS

$custom: #3640b6;
$custom-light: #7e75cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3640b6",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 182
  },
  "hsl": {
    "h": 235.313,
    "s": 54.237,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44212,
    "c": 0.18379,
    "h": 272.5
  },
  "luminance": 0.07828
}

Semantic roles & 50–950 ramp

primary

#3640B6

secondary

#C6C181

accent

#D24ADE

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3640B6

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

Preview Lab → · Contrast checker → · Palette generator →