#3F36B8#3F36B8

#3F36B8 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.4% C 0.196 H 277.5°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F36B8
RGB	rgb(63, 54, 184)
HSL	hsl(244, 55%, 47%)
HSV	hsv(244, 71%, 72%)
CMYK	cmyk(65.8%, 70.7%, 0%, 27.8%)
CIE-LAB	lab(32.16, 43.39, -67.14)
CIE-LCH	lch(32.16, 79.93, 302.87°)
OKLab	oklab(43.36% 0.0256 -0.1938)
OKLCH	oklch(43.36% 0.196 277.5)
XYZ	xyz(12.0180, 7.1548, 46.0858)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.62

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F36B8 #AFB836

analogous

#366EB8 #3F36B8 #8036B8

triadic

#3F36B8 #B83F36 #36B83F

tetradic

#3F36B8 #B8366E #AFB836 #36B880

square

#3F36B8 #B8366E #AFB836 #36B880

split-complementary

#3F36B8 #B88036 #6EB836

monochromatic

#1F1A59 #2F2889 #3F36B8 #645CCF #918BDD

Accessibility & contrast

On white

8.64

#3F36B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3F36B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F36B8

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F36B8	#FFFFFF	#000000	##FFFFFF
##3F36B8	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0046B6

Tritanopia (blue-blind)

#005A73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f36b8;
/* rgb */ color: rgb(63, 54, 184);
/* oklch */ color: oklch(43.4% 0.196 277.5);

Tailwind

colors: {
  custom: {
    50: '#846ece',
    500: '#3f36b8',
    950: '#000000',
  },
}

SCSS

$custom: #3f36b8;
$custom-light: #846ece;
$custom-dark: #000000;

JSON

{
  "hex": "#3f36b8",
  "rgb": {
    "r": 63,
    "g": 54,
    "b": 184
  },
  "hsl": {
    "h": 244.154,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43363,
    "c": 0.1955,
    "h": 277.5
  },
  "luminance": 0.07156
}

Semantic roles & 50–950 ramp

primary

#3F36B8

secondary

#C3C782

accent

#DE4AD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F36B8

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

Preview Lab → · Contrast checker → · Palette generator →