#3F39CF#3F39CF

#3F39CF is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 46.0% C 0.221 H 275.1°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F39CF
RGB	rgb(63, 57, 207)
HSL	hsl(242, 61%, 52%)
HSV	hsv(242, 72%, 81%)
CMYK	cmyk(69.6%, 72.5%, 0%, 18.8%)
CIE-LAB	lab(34.98, 49.10, -75.97)
CIE-LCH	lch(34.98, 90.45, 302.87°)
OKLab	oklab(46.04% 0.0197 -0.2196)
OKLCH	oklch(46.04% 0.221 275.1)
XYZ	xyz(14.7718, 8.4866, 59.8790)
Luminance	0.0849 (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

#3F39CF #C9CF39

analogous

#397ECF #3F39CF #8A39CF

triadic

#3F39CF #CF3F39 #39CF3F

tetradic

#3F39CF #CF397E #C9CF39 #39CF8A

square

#3F39CF #CF397E #C9CF39 #39CF8A

split-complementary

#3F39CF #CF8A39 #7ECF39

monochromatic

#1F1C72 #2D28A3 #3F39CF #6F6ADB #9F9CE7

Accessibility & contrast

On white

7.78

#3F39CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3F39CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39CF

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39CF	#FFFFFF	#000000	##FFFFFF
##3F39CF	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059D3

Deuteranopia (green-blind)

#004BCC

Tritanopia (blue-blind)

#006481

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f39cf;
/* rgb */ color: rgb(63, 57, 207);
/* oklch */ color: oklch(46.0% 0.221 275.1);

Tailwind

colors: {
  custom: {
    50: '#8871df',
    500: '#3f39cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f39cf;
$custom-light: #8871df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39cf",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 207
  },
  "hsl": {
    "h": 242.4,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.46042,
    "c": 0.2205,
    "h": 275.1
  },
  "luminance": 0.08488
}

Semantic roles & 50–950 ramp

primary

#3F39CF

secondary

#D0D391

accent

#E444DE

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F39CF

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

Preview Lab → · Contrast checker → · Palette generator →