#3F39C0#3F39C0

#3F39C0 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.6% C 0.202 H 276.3°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F39C0
RGB	rgb(63, 57, 192)
HSL	hsl(243, 54%, 49%)
HSV	hsv(243, 70%, 75%)
CMYK	cmyk(67.2%, 70.3%, 0%, 24.7%)
CIE-LAB	lab(33.54, 44.26, -69.58)
CIE-LCH	lch(33.54, 82.47, 302.46°)
OKLab	oklab(44.58% 0.0223 -0.201)
OKLCH	oklch(44.58% 0.202 276.3)
XYZ	xyz(13.0243, 7.7876, 50.6757)
Luminance	0.0779 (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

#3F39C0 #BAC039

analogous

#3977C0 #3F39C0 #8339C0

triadic

#3F39C0 #C03F39 #39C03F

tetradic

#3F39C0 #C03977 #BAC039 #39C083

square

#3F39C0 #C03977 #BAC039 #39C083

split-complementary

#3F39C0 #C08339 #77C039

monochromatic

#201D62 #302B91 #3F39C0 #6A65D1 #9794DF

Accessibility & contrast

On white

8.21

#3F39C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3F39C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39C0

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39C0	#FFFFFF	#000000	##FFFFFF
##3F39C0	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C4

Deuteranopia (green-blind)

#0049BD

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f39c0;
/* rgb */ color: rgb(63, 57, 192);
/* oklch */ color: oklch(44.6% 0.202 276.3);

Tailwind

colors: {
  custom: {
    50: '#8571d4',
    500: '#3f39c0',
    950: '#000000',
  },
}

SCSS

$custom: #3f39c0;
$custom-light: #8571d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39c0",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 192
  },
  "hsl": {
    "h": 242.667,
    "s": 54.217,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4458,
    "c": 0.20222,
    "h": 276.3
  },
  "luminance": 0.07789
}

Semantic roles & 50–950 ramp

primary

#3F39C0

secondary

#C8CB8A

accent

#DE4AD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F39C0

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

Preview Lab → · Contrast checker → · Palette generator →