#3639B2#3639B2

#3639B2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.187 H 274.1°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#3639B2
RGB	rgb(54, 57, 178)
HSL	hsl(239, 53%, 45%)
HSV	hsv(239, 70%, 70%)
CMYK	cmyk(69.7%, 68%, 0%, 30.2%)
CIE-LAB	lab(31.63, 38.48, -64.46)
CIE-LCH	lch(31.63, 75.07, 300.84°)
OKLab	oklab(42.66% 0.0132 -0.1862)
OKLCH	oklch(42.66% 0.187 274.1)
XYZ	xyz(11.0177, 6.9238, 42.8667)
Luminance	0.0693 (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

#3639B2 #B2AF36

analogous

#3677B2 #3639B2 #7136B2

triadic

#3639B2 #B23639 #39B236

tetradic

#3639B2 #B23677 #B2AF36 #36B271

square

#3639B2 #B23677 #B2AF36 #36B271

split-complementary

#3639B2 #B27136 #77B236

monochromatic

#1A1B54 #282A83 #3639B2 #595BCD #888ADB

Accessibility & contrast

On white

8.81

#3639B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3639B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639B2

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639B2	#FFFFFF	#000000	##FFFFFF
##3639B2	1.00	8.81	2.39	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005971

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3639b2;
/* rgb */ color: rgb(54, 57, 178);
/* oklch */ color: oklch(42.7% 0.187 274.1);

Tailwind

colors: {
  custom: {
    50: '#7e70ca',
    500: '#3639b2',
    950: '#000000',
  },
}

SCSS

$custom: #3639b2;
$custom-light: #7e70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3639b2",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 238.548,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42655,
    "c": 0.1867,
    "h": 274.1
  },
  "luminance": 0.06925
}

Semantic roles & 50–950 ramp

primary

#3639B2

secondary

#C5C37F

accent

#D94BDD

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3639B2

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

Preview Lab → · Contrast checker → · Palette generator →