#3F4BC4#3F4BC4

#3F4BC4 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.9% C 0.187 H 272.8°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BC4
RGB	rgb(63, 75, 196)
HSL	hsl(235, 53%, 51%)
HSV	hsv(235, 68%, 77%)
CMYK	cmyk(67.9%, 61.7%, 0%, 23.1%)
CIE-LAB	lab(37.97, 34.68, -64.66)
CIE-LCH	lch(37.97, 73.37, 298.21°)
OKLab	oklab(47.91% 0.009 -0.1865)
OKLCH	oklch(47.91% 0.187 272.8)
XYZ	xyz(14.5264, 10.0731, 53.3926)
Luminance	0.1007 (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

#3F4BC4 #C4B83F

analogous

#3F8EC4 #3F4BC4 #753FC4

triadic

#3F4BC4 #C43F4B #4BC43F

tetradic

#3F4BC4 #C43F8E #C4B83F #3FC475

square

#3F4BC4 #C43F8E #C4B83F #3FC475

split-complementary

#3F4BC4 #C4753F #8EC43F

monochromatic

#202768 #2E3897 #3F4BC4 #6E77D2 #9DA3E1

Accessibility & contrast

On white

6.97

#3F4BC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3F4BC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4BC4

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BC4	#FFFFFF	#000000	##FFFFFF
##3F4BC4	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C8

Deuteranopia (green-blind)

#0053C2

Tritanopia (blue-blind)

#006A80

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4bc4;
/* rgb */ color: rgb(63, 75, 196);
/* oklch */ color: oklch(47.9% 0.187 272.8);

Tailwind

colors: {
  custom: {
    50: '#847dd7',
    500: '#3f4bc4',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bc4;
$custom-light: #847dd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bc4",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 196
  },
  "hsl": {
    "h": 234.586,
    "s": 52.988,
    "l": 50.784
  },
  "oklch": {
    "l": 0.47913,
    "c": 0.18671,
    "h": 272.8
  },
  "luminance": 0.10074
}

Semantic roles & 50–950 ramp

primary

#3F4BC4

secondary

#CDC892

accent

#CF4BDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4BC4

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

Preview Lab → · Contrast checker → · Palette generator →