#3638B8#3638B8

#3638B8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.1% C 0.195 H 273.8°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#3638B8
RGB	rgb(54, 56, 184)
HSL	hsl(239, 55%, 47%)
HSV	hsv(239, 71%, 72%)
CMYK	cmyk(70.7%, 69.6%, 0%, 27.8%)
CIE-LAB	lab(31.97, 41.13, -67.46)
CIE-LCH	lch(31.97, 79.01, 301.37°)
OKLab	oklab(43.07% 0.0131 -0.195)
OKLCH	oklch(43.07% 0.195 273.8)
XYZ	xyz(11.5843, 7.0722, 46.0927)
Luminance	0.0707 (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

#3638B8 #B8B636

analogous

#3679B8 #3638B8 #7536B8

triadic

#3638B8 #B83638 #38B836

tetradic

#3638B8 #B83679 #B8B636 #36B875

square

#3638B8 #B83679 #B8B636 #36B875

split-complementary

#3638B8 #B87536 #79B836

monochromatic

#1A1B59 #282A89 #3638B8 #5C5ECF #8B8DDD

Accessibility & contrast

On white

8.70

#3638B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3638B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3638B8

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3638B8	#FFFFFF	#000000	##FFFFFF
##3638B8	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0045B6

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3638b8;
/* rgb */ color: rgb(54, 56, 184);
/* oklch */ color: oklch(43.1% 0.195 273.8);

Tailwind

colors: {
  custom: {
    50: '#806fce',
    500: '#3638b8',
    950: '#000000',
  },
}

SCSS

$custom: #3638b8;
$custom-light: #806fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3638b8",
  "rgb": {
    "r": 54,
    "g": 56,
    "b": 184
  },
  "hsl": {
    "h": 239.077,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4307,
    "c": 0.19546,
    "h": 273.8
  },
  "luminance": 0.07073
}

Semantic roles & 50–950 ramp

primary

#3638B8

secondary

#C7C682

accent

#DC4ADE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3638B8

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

Preview Lab → · Contrast checker → · Palette generator →