#3F43C4#3F43C4

#3F43C4 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.5% C 0.196 H 274.4°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#3F43C4
RGB	rgb(63, 67, 196)
HSL	hsl(238, 53%, 51%)
HSV	hsv(238, 68%, 77%)
CMYK	cmyk(67.9%, 65.8%, 0%, 23.1%)
CIE-LAB	lab(36.09, 39.64, -67.74)
CIE-LCH	lch(36.09, 78.48, 300.34°)
OKLab	oklab(46.54% 0.015 -0.1956)
OKLCH	oklch(46.54% 0.196 274.4)
XYZ	xyz(14.0176, 9.0553, 53.2230)
Luminance	0.0906 (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

#3F43C4 #C4C03F

analogous

#3F86C4 #3F43C4 #7D3FC4

triadic

#3F43C4 #C43F43 #43C43F

tetradic

#3F43C4 #C43F86 #C4C03F #3FC47D

square

#3F43C4 #C43F86 #C4C03F #3FC47D

split-complementary

#3F43C4 #C47D3F #86C43F

monochromatic

#202268 #2E3297 #3F43C4 #6E71D2 #9D9FE1

Accessibility & contrast

On white

7.47

#3F43C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3F43C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43C4

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43C4	#FFFFFF	#000000	##FFFFFF
##3F43C4	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC8

Deuteranopia (green-blind)

#004FC2

Tritanopia (blue-blind)

#00657D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f43c4;
/* rgb */ color: rgb(63, 67, 196);
/* oklch */ color: oklch(46.5% 0.196 274.4);

Tailwind

colors: {
  custom: {
    50: '#8577d7',
    500: '#3f43c4',
    950: '#000000',
  },
}

SCSS

$custom: #3f43c4;
$custom-light: #8577d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43c4",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 196
  },
  "hsl": {
    "h": 238.195,
    "s": 52.988,
    "l": 50.784
  },
  "oklch": {
    "l": 0.46535,
    "c": 0.19614,
    "h": 274.4
  },
  "luminance": 0.09057
}

Semantic roles & 50–950 ramp

primary

#3F43C4

secondary

#CDCB92

accent

#D84BDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3F43C4

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

Preview Lab → · Contrast checker → · Palette generator →