#3F41C6#3F41C6

#3F41C6 is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.4% C 0.201 H 274.6°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#3F41C6
RGB	rgb(63, 65, 198)
HSL	hsl(239, 54%, 51%)
HSV	hsv(239, 68%, 78%)
CMYK	cmyk(68.2%, 67.2%, 0%, 22.4%)
CIE-LAB	lab(35.82, 41.52, -69.35)
CIE-LCH	lch(35.82, 80.83, 300.91°)
OKLab	oklab(46.39% 0.0161 -0.2003)
OKLCH	oklch(46.39% 0.201 274.6)
XYZ	xyz(14.1299, 8.9133, 54.3909)
Luminance	0.0891 (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

#3F41C6 #C6C43F

analogous

#3F84C6 #3F41C6 #803FC6

triadic

#3F41C6 #C63F41 #41C63F

tetradic

#3F41C6 #C63F84 #C6C43F #3FC680

square

#3F41C6 #C63F84 #C6C43F #3FC680

split-complementary

#3F41C6 #C6803F #84C63F

monochromatic

#20216B #2E2F9A #3F41C6 #6E70D4 #9D9EE2

Accessibility & contrast

On white

7.55

#3F41C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#3F41C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41C6

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41C6	#FFFFFF	#000000	##FFFFFF
##3F41C6	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ACA

Deuteranopia (green-blind)

#004EC3

Tritanopia (blue-blind)

#00647E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f41c6;
/* rgb */ color: rgb(63, 65, 198);
/* oklch */ color: oklch(46.4% 0.201 274.6);

Tailwind

colors: {
  custom: {
    50: '#8576d8',
    500: '#3f41c6',
    950: '#000000',
  },
}

SCSS

$custom: #3f41c6;
$custom-light: #8576d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41c6",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 198
  },
  "hsl": {
    "h": 239.111,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.4639,
    "c": 0.20096,
    "h": 274.6
  },
  "luminance": 0.08915
}

Semantic roles & 50–950 ramp

primary

#3F41C6

secondary

#CECD93

accent

#DB4ADE

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #3F41C6

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

Preview Lab → · Contrast checker → · Palette generator →