#3F41C7#3F41C7

#3F41C7 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.5% C 0.202 H 274.5°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F41C7
RGB	rgb(63, 65, 199)
HSL	hsl(239, 55%, 51%)
HSV	hsv(239, 68%, 78%)
CMYK	cmyk(68.3%, 67.3%, 0%, 22%)
CIE-LAB	lab(35.91, 41.86, -69.79)
CIE-LCH	lch(35.91, 81.38, 300.96°)
OKLab	oklab(46.48% 0.016 -0.2016)
OKLCH	oklch(46.48% 0.202 274.5)
XYZ	xyz(14.2456, 8.9596, 55.0004)
Luminance	0.0896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.76

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41C7 #C7C53F

analogous

#3F85C7 #3F41C7 #813FC7

triadic

#3F41C7 #C73F41 #41C73F

tetradic

#3F41C7 #C73F85 #C7C53F #3FC781

square

#3F41C7 #C73F85 #C7C53F #3FC781

split-complementary

#3F41C7 #C7813F #85C73F

monochromatic

#20216C #2D2F9B #3F41C7 #6E70D5 #9E9FE3

Accessibility & contrast

On white

7.52

#3F41C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#3F41C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41C7

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41C7	#FFFFFF	#000000	##FFFFFF
##3F41C7	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCB

Deuteranopia (green-blind)

#004EC4

Tritanopia (blue-blind)

#00657E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f41c7;
/* rgb */ color: rgb(63, 65, 199);
/* oklch */ color: oklch(46.5% 0.202 274.5);

Tailwind

colors: {
  custom: {
    50: '#8676d9',
    500: '#3f41c7',
    950: '#000000',
  },
}

SCSS

$custom: #3f41c7;
$custom-light: #8676d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41c7",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 199
  },
  "hsl": {
    "h": 239.118,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.46482,
    "c": 0.20222,
    "h": 274.5
  },
  "luminance": 0.08961
}

Semantic roles & 50–950 ramp

primary

#3F41C7

secondary

#CFCE93

accent

#DC4ADE

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #3F41C7

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

Preview Lab → · Contrast checker → · Palette generator →