#3F4FD4#3F4FD4

#3F4FD4 is a mid, highly saturated blue. Relative luminance 0.114; OKLCH L 50.0% C 0.203 H 271.5°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FD4
RGB	rgb(63, 79, 212)
HSL	hsl(234, 63%, 54%)
HSV	hsv(234, 70%, 83%)
CMYK	cmyk(70.3%, 62.7%, 0%, 16.9%)
CIE-LAB	lab(40.25, 37.74, -70.20)
CIE-LCH	lch(40.25, 79.70, 298.27°)
OKLab	oklab(49.99% 0.0055 -0.2027)
OKLCH	oklch(49.99% 0.203 271.5)
XYZ	xyz(16.7255, 11.4005, 63.5937)
Luminance	0.1140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FD4 #D4C43F

analogous

#3F9AD4 #3F4FD4 #7A3FD4

triadic

#3F4FD4 #D43F4F #4FD43F

tetradic

#3F4FD4 #D43F9A #D4C43F #3FD47A

square

#3F4FD4 #D43F9A #D4C43F #3FD47A

split-complementary

#3F4FD4 #D47A3F #9AD43F

monochromatic

#1C267D #2736AF #3F4FD4 #717DDF #A3ABEA

Accessibility & contrast

On white

6.40

#3F4FD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3F4FD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FD4

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FD4	#FFFFFF	#000000	##FFFFFF
##3F4FD4	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D8

Deuteranopia (green-blind)

#0058D1

Tritanopia (blue-blind)

#00718A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f4fd4;
/* rgb */ color: rgb(63, 79, 212);
/* oklch */ color: oklch(50.0% 0.203 271.5);

Tailwind

colors: {
  custom: {
    50: '#8780e2',
    500: '#3f4fd4',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fd4;
$custom-light: #8780e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fd4",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 212
  },
  "hsl": {
    "h": 233.557,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.49994,
    "c": 0.20279,
    "h": 271.5
  },
  "luminance": 0.11402
}

Semantic roles & 50–950 ramp

primary

#3F4FD4

secondary

#D7D098

accent

#D541E6

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A15

muted

#7E7C84

Preview Lab

Preview with #3F4FD4

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

Preview Lab → · Contrast checker → · Palette generator →