#3F3AB5#3F3AB5

#3F3AB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.7% C 0.187 H 277.1°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#3F3AB5
RGB	rgb(63, 58, 181)
HSL	hsl(242, 51%, 47%)
HSV	hsv(242, 68%, 71%)
CMYK	cmyk(65.2%, 68%, 0%, 29%)
CIE-LAB	lab(32.74, 40.05, -64.40)
CIE-LCH	lch(32.74, 75.84, 301.88°)
OKLab	oklab(43.7% 0.0232 -0.1858)
OKLCH	oklch(43.7% 0.187 277.1)
XYZ	xyz(11.9007, 7.4181, 44.5118)
Luminance	0.0742 (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

#3F3AB5 #B0B53A

analogous

#3A73B5 #3F3AB5 #7D3AB5

triadic

#3F3AB5 #B53F3A #3AB53F

tetradic

#3F3AB5 #B53A73 #B0B53A #3AB57D

square

#3F3AB5 #B53A73 #B0B53A #3AB57D

split-complementary

#3F3AB5 #B57D3A #73B53A

monochromatic

#1F1C58 #2F2B87 #3F3AB5 #6560CC #928EDB

Accessibility & contrast

On white

8.45

#3F3AB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#3F3AB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3AB5

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3AB5	#FFFFFF	#000000	##FFFFFF
##3F3AB5	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B9

Deuteranopia (green-blind)

#0048B3

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3ab5;
/* rgb */ color: rgb(63, 58, 181);
/* oklch */ color: oklch(43.7% 0.187 277.1);

Tailwind

colors: {
  custom: {
    50: '#8371cc',
    500: '#3f3ab5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3ab5;
$custom-light: #8371cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3ab5",
  "rgb": {
    "r": 63,
    "g": 58,
    "b": 181
  },
  "hsl": {
    "h": 242.439,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43699,
    "c": 0.18726,
    "h": 277.1
  },
  "luminance": 0.07419
}

Semantic roles & 50–950 ramp

primary

#3F3AB5

secondary

#C3C685

accent

#DB4DD5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3AB5

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

Preview Lab → · Contrast checker → · Palette generator →