#3F41CA#3F41CA

#3F41CA is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 46.8% C 0.206 H 274.4°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#3F41CA
RGB	rgb(63, 65, 202)
HSL	hsl(239, 57%, 52%)
HSV	hsv(239, 69%, 79%)
CMYK	cmyk(68.8%, 67.8%, 0%, 20.8%)
CIE-LAB	lab(36.18, 42.86, -71.09)
CIE-LCH	lch(36.18, 83.01, 301.09°)
OKLab	oklab(46.76% 0.0157 -0.2054)
OKLCH	oklch(46.76% 0.206 274.4)
XYZ	xyz(14.5973, 9.1003, 56.8529)
Luminance	0.0910 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.87

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41CA #CAC83F

analogous

#3F86CA #3F41CA #833FCA

triadic

#3F41CA #CA3F41 #41CA3F

tetradic

#3F41CA #CA3F86 #CAC83F #3FCA83

square

#3F41CA #CA3F86 #CAC83F #3FCA83

split-complementary

#3F41CA #CA833F #86CA3F

monochromatic

#1F2070 #2C2EA0 #3F41CA #6F70D7 #9FA0E4

Accessibility & contrast

On white

7.45

#3F41CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#3F41CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41CA

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41CA	#FFFFFF	#000000	##FFFFFF
##3F41CA	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCE

Deuteranopia (green-blind)

#004FC7

Tritanopia (blue-blind)

#006680

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f41ca;
/* rgb */ color: rgb(63, 65, 202);
/* oklch */ color: oklch(46.8% 0.206 274.4);

Tailwind

colors: {
  custom: {
    50: '#8676db',
    500: '#3f41ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f41ca;
$custom-light: #8676db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41ca",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 202
  },
  "hsl": {
    "h": 239.137,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.4676,
    "c": 0.20599,
    "h": 274.4
  },
  "luminance": 0.09102
}

Semantic roles & 50–950 ramp

primary

#3F41CA

secondary

#D1D094

accent

#DE48E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F41CA

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

Preview Lab → · Contrast checker → · Palette generator →