#3F39BE#3F39BE

#3F39BE is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.4% C 0.200 H 276.5°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F39BE
RGB	rgb(63, 57, 190)
HSL	hsl(243, 54%, 48%)
HSV	hsv(243, 70%, 75%)
CMYK	cmyk(66.8%, 70%, 0%, 25.5%)
CIE-LAB	lab(33.35, 43.60, -68.72)
CIE-LCH	lch(33.35, 81.38, 302.40°)
OKLab	oklab(44.39% 0.0226 -0.1984)
OKLCH	oklch(44.39% 0.2 276.5)
XYZ	xyz(12.8043, 7.6996, 49.5166)
Luminance	0.0770 (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

#3F39BE #B8BE39

analogous

#3975BE #3F39BE #8139BE

triadic

#3F39BE #BE3F39 #39BE3F

tetradic

#3F39BE #BE3975 #B8BE39 #39BE81

square

#3F39BE #BE3975 #B8BE39 #39BE81

split-complementary

#3F39BE #BE8139 #75BE39

monochromatic

#201D60 #2F2B8F #3F39BE #6964D0 #9693DF

Accessibility & contrast

On white

8.27

#3F39BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3F39BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39BE

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39BE	#FFFFFF	#000000	##FFFFFF
##3F39BE	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C2

Deuteranopia (green-blind)

#0049BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f39be;
/* rgb */ color: rgb(63, 57, 190);
/* oklch */ color: oklch(44.4% 0.200 276.5);

Tailwind

colors: {
  custom: {
    50: '#8571d3',
    500: '#3f39be',
    950: '#000000',
  },
}

SCSS

$custom: #3f39be;
$custom-light: #8571d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39be",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 190
  },
  "hsl": {
    "h": 242.707,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44389,
    "c": 0.19973,
    "h": 276.5
  },
  "luminance": 0.07701
}

Semantic roles & 50–950 ramp

primary

#3F39BE

secondary

#C7CA89

accent

#DD4BD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F39BE

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

Preview Lab → · Contrast checker → · Palette generator →