#3F41D7#3F41D7

#3F41D7 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 48.0% C 0.222 H 273.6°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F41D7
RGB	rgb(63, 65, 215)
HSL	hsl(239, 66%, 55%)
HSV	hsv(239, 71%, 84%)
CMYK	cmyk(70.7%, 69.8%, 0%, 15.7%)
CIE-LAB	lab(37.38, 47.17, -76.64)
CIE-LCH	lch(37.38, 89.99, 301.61°)
OKLab	oklab(47.99% 0.014 -0.2216)
OKLCH	oklch(47.99% 0.222 273.6)
XYZ	xyz(16.2018, 9.7421, 65.3034)
Luminance	0.0974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.21

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F41D7 #D7D53F

analogous

#3F8DD7 #3F41D7 #893FD7

triadic

#3F41D7 #D73F41 #41D73F

tetradic

#3F41D7 #D73F8D #D7D53F #3FD789

square

#3F41D7 #D73F8D #D7D53F #3FD789

split-complementary

#3F41D7 #D7893F #8DD73F

monochromatic

#1B1C81 #2527B3 #3F41D7 #7273E2 #A4A5EC

Accessibility & contrast

On white

7.12

#3F41D7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F41D7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41D7

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41D7	#FFFFFF	#000000	##FFFFFF
##3F41D7	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDC

Deuteranopia (green-blind)

#0051D4

Tritanopia (blue-blind)

#006B87

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f41d7;
/* rgb */ color: rgb(63, 65, 215);
/* oklch */ color: oklch(48.0% 0.222 273.6);

Tailwind

colors: {
  custom: {
    50: '#8977e5',
    500: '#3f41d7',
    950: '#000000',
  },
}

SCSS

$custom: #3f41d7;
$custom-light: #8977e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41d7",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 215
  },
  "hsl": {
    "h": 239.211,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.47988,
    "c": 0.22204,
    "h": 273.6
  },
  "luminance": 0.09744
}

Semantic roles & 50–950 ramp

primary

#3F41D7

secondary

#D9D899

accent

#E63FE8

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F41D7

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

Preview Lab → · Contrast checker → · Palette generator →