#3F4BC1#3F4BC1

#3F4BC1 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.7% C 0.183 H 272.9°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BC1
RGB	rgb(63, 75, 193)
HSL	hsl(234, 51%, 50%)
HSV	hsv(234, 67%, 76%)
CMYK	cmyk(67.4%, 61.1%, 0%, 24.3%)
CIE-LAB	lab(37.73, 33.64, -63.30)
CIE-LCH	lch(37.73, 71.69, 297.99°)
OKLab	oklab(47.66% 0.0091 -0.1825)
OKLCH	oklch(47.66% 0.183 272.9)
XYZ	xyz(14.1884, 9.9379, 51.6122)
Luminance	0.0994 (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

#3F4BC1 #C1B53F

analogous

#3F8CC1 #3F4BC1 #743FC1

triadic

#3F4BC1 #C13F4B #4BC13F

tetradic

#3F4BC1 #C13F8C #C1B53F #3FC174

square

#3F4BC1 #C13F8C #C1B53F #3FC174

split-complementary

#3F4BC1 #C1743F #8CC13F

monochromatic

#212765 #303993 #3F4BC1 #6D76D0 #9CA2DF

Accessibility & contrast

On white

7.03

#3F4BC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#3F4BC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BC1

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BC1	#FFFFFF	#000000	##FFFFFF
##3F4BC1	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC5

Deuteranopia (green-blind)

#0053BF

Tritanopia (blue-blind)

#00697F

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4bc1;
/* rgb */ color: rgb(63, 75, 193);
/* oklch */ color: oklch(47.7% 0.183 272.9);

Tailwind

colors: {
  custom: {
    50: '#847dd5',
    500: '#3f4bc1',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bc1;
$custom-light: #847dd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bc1",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 193
  },
  "hsl": {
    "h": 234.462,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.47659,
    "c": 0.18275,
    "h": 272.9
  },
  "luminance": 0.09939
}

Semantic roles & 50–950 ramp

primary

#3F4BC1

secondary

#CBC691

accent

#CE4DDB

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4BC1

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

Preview Lab → · Contrast checker → · Palette generator →