#3638B9#3638B9

#3638B9 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.2% C 0.197 H 273.8°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#3638B9
RGB	rgb(54, 56, 185)
HSL	hsl(239, 55%, 47%)
HSV	hsv(239, 71%, 73%)
CMYK	cmyk(70.8%, 69.7%, 0%, 27.5%)
CIE-LAB	lab(32.07, 41.47, -67.90)
CIE-LCH	lch(32.07, 79.56, 301.42°)
OKLab	oklab(43.17% 0.013 -0.1963)
OKLCH	oklch(43.17% 0.197 273.8)
XYZ	xyz(11.6895, 7.1143, 46.6467)
Luminance	0.0712 (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

#3638B9 #B9B736

analogous

#367AB9 #3638B9 #7636B9

triadic

#3638B9 #B93638 #38B936

tetradic

#3638B9 #B9367A #B9B736 #36B976

square

#3638B9 #B9367A #B9B736 #36B976

split-complementary

#3638B9 #B97636 #7AB936

monochromatic

#1A1B5A #282A8A #3638B9 #5D5ED0 #8C8DDD

Accessibility & contrast

On white

8.67

#3638B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3638B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3638B9

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3638B9	#FFFFFF	#000000	##FFFFFF
##3638B9	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BD

Deuteranopia (green-blind)

#0045B7

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3638b9;
/* rgb */ color: rgb(54, 56, 185);
/* oklch */ color: oklch(43.2% 0.197 273.8);

Tailwind

colors: {
  custom: {
    50: '#806fcf',
    500: '#3638b9',
    950: '#000000',
  },
}

SCSS

$custom: #3638b9;
$custom-light: #806fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3638b9",
  "rgb": {
    "r": 54,
    "g": 56,
    "b": 185
  },
  "hsl": {
    "h": 239.084,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43167,
    "c": 0.19672,
    "h": 273.8
  },
  "luminance": 0.07115
}

Semantic roles & 50–950 ramp

primary

#3638B9

secondary

#C8C783

accent

#DC4ADE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3638B9

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

Preview Lab → · Contrast checker → · Palette generator →