#3640BD#3640BD

#3640BD is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.9% C 0.193 H 272.2°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#3640BD
RGB	rgb(54, 64, 189)
HSL	hsl(236, 56%, 48%)
HSV	hsv(236, 71%, 74%)
CMYK	cmyk(71.4%, 66.1%, 0%, 25.9%)
CIE-LAB	lab(34.24, 37.97, -66.69)
CIE-LCH	lch(34.24, 76.74, 299.66°)
OKLab	oklab(44.85% 0.0075 -0.1927)
OKLCH	oklch(44.85% 0.193 272.2)
XYZ	xyz(12.5369, 8.1239, 49.0416)
Luminance	0.0813 (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

#3640BD #BDB336

analogous

#3683BD #3640BD #7036BD

triadic

#3640BD #BD3640 #40BD36

tetradic

#3640BD #BD3683 #BDB336 #36BD70

square

#3640BD #BD3683 #BDB336 #36BD70

split-complementary

#3640BD #BD7036 #83BD36

monochromatic

#1B205E #28308D #3640BD #5F67D1 #8F94DF

Accessibility & contrast

On white

8.00

#3640BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#3640BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640BD

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640BD	#FFFFFF	#000000	##FFFFFF
##3640BD	1.00	8.00	2.63	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C1

Deuteranopia (green-blind)

#004ABB

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3640bd;
/* rgb */ color: rgb(54, 64, 189);
/* oklch */ color: oklch(44.9% 0.193 272.2);

Tailwind

colors: {
  custom: {
    50: '#8075d2',
    500: '#3640bd',
    950: '#000000',
  },
}

SCSS

$custom: #3640bd;
$custom-light: #8075d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3640bd",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 189
  },
  "hsl": {
    "h": 235.556,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44854,
    "c": 0.19288,
    "h": 272.2
  },
  "luminance": 0.08125
}

Semantic roles & 50–950 ramp

primary

#3640BD

secondary

#C9C485

accent

#D449DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3640BD

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

Preview Lab → · Contrast checker → · Palette generator →