#3F4FC4#3F4FC4

#3F4FC4 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.6% C 0.182 H 271.9°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FC4
RGB	rgb(63, 79, 196)
HSL	hsl(233, 53%, 51%)
HSV	hsv(233, 68%, 77%)
CMYK	cmyk(67.9%, 59.7%, 0%, 23.1%)
CIE-LAB	lab(38.96, 32.16, -63.06)
CIE-LCH	lch(38.96, 70.78, 297.02°)
OKLab	oklab(48.64% 0.0059 -0.1817)
OKLCH	oklch(48.64% 0.182 271.9)
XYZ	xyz(14.8063, 10.6329, 53.4859)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FC4 #C4B43F

analogous

#3F91C4 #3F4FC4 #713FC4

triadic

#3F4FC4 #C43F4F #4FC43F

tetradic

#3F4FC4 #C43F91 #C4B43F #3FC471

square

#3F4FC4 #C43F91 #C4B43F #3FC471

split-complementary

#3F4FC4 #C4713F #91C43F

monochromatic

#202968 #2E3B97 #3F4FC4 #6E7AD2 #9DA5E1

Accessibility & contrast

On white

6.72

#3F4FC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F4FC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FC4

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FC4	#FFFFFF	#000000	##FFFFFF
##3F4FC4	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C8

Deuteranopia (green-blind)

#0056C2

Tritanopia (blue-blind)

#006C82

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4fc4;
/* rgb */ color: rgb(63, 79, 196);
/* oklch */ color: oklch(48.6% 0.182 271.9);

Tailwind

colors: {
  custom: {
    50: '#8480d7',
    500: '#3f4fc4',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fc4;
$custom-light: #8480d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fc4",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 196
  },
  "hsl": {
    "h": 232.782,
    "s": 52.988,
    "l": 50.784
  },
  "oklch": {
    "l": 0.48639,
    "c": 0.18185,
    "h": 271.9
  },
  "luminance": 0.10634
}

Semantic roles & 50–950 ramp

primary

#3F4FC4

secondary

#CDC692

accent

#CB4BDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F4FC4

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

Preview Lab → · Contrast checker → · Palette generator →