#3F41AF#3F41AF

#3F41AF is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.171 H 276.1°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F41AF
RGB	rgb(63, 65, 175)
HSL	hsl(239, 47%, 47%)
HSV	hsv(239, 64%, 69%)
CMYK	cmyk(64%, 62.9%, 0%, 31.4%)
CIE-LAB	lab(33.84, 33.72, -59.04)
CIE-LCH	lch(33.84, 67.99, 299.74°)
OKLab	oklab(44.34% 0.0181 -0.1701)
OKLCH	oklch(44.34% 0.171 276.1)
XYZ	xyz(11.6755, 7.9315, 41.4648)
Luminance	0.0793 (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

#3F41AF #AFAD3F

analogous

#3F79AF #3F41AF #753FAF

triadic

#3F41AF #AF3F41 #41AF3F

tetradic

#3F41AF #AF3F79 #AFAD3F #3FAF75

square

#3F41AF #AF3F79 #AFAD3F #3FAF75

split-complementary

#3F41AF #AF753F #79AF3F

monochromatic

#1F2055 #2F3082 #3F41AF #6466C7 #9192D7

Accessibility & contrast

On white

8.12

#3F41AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3F41AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F41AF

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F41AF	#FFFFFF	#000000	##FFFFFF
##3F41AF	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B3

Deuteranopia (green-blind)

#004BAD

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f41af;
/* rgb */ color: rgb(63, 65, 175);
/* oklch */ color: oklch(44.3% 0.171 276.1);

Tailwind

colors: {
  custom: {
    50: '#8176c8',
    500: '#3f41af',
    950: '#000000',
  },
}

SCSS

$custom: #3f41af;
$custom-light: #8176c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f41af",
  "rgb": {
    "r": 63,
    "g": 65,
    "b": 175
  },
  "hsl": {
    "h": 238.929,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4434,
    "c": 0.17103,
    "h": 276.1
  },
  "luminance": 0.07933
}

Semantic roles & 50–950 ramp

primary

#3F41AF

secondary

#C3C287

accent

#D451D7

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3F41AF

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

Preview Lab → · Contrast checker → · Palette generator →