#3F4FCD#3F4FCD

#3F4FCD is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.4% C 0.194 H 271.7°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FCD
RGB	rgb(63, 79, 205)
HSL	hsl(233, 59%, 53%)
HSV	hsv(233, 69%, 80%)
CMYK	cmyk(69.3%, 61.5%, 0%, 19.6%)
CIE-LAB	lab(39.67, 35.31, -67.10)
CIE-LCH	lch(39.67, 75.83, 297.75°)
OKLab	oklab(49.39% 0.0057 -0.1936)
OKLCH	oklch(49.39% 0.194 271.7)
XYZ	xyz(15.8616, 11.0550, 59.0437)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FCD #CDBD3F

analogous

#3F96CD #3F4FCD #763FCD

triadic

#3F4FCD #CD3F4F #4FCD3F

tetradic

#3F4FCD #CD3F96 #CDBD3F #3FCD76

square

#3F4FCD #CD3F96 #CDBD3F #3FCD76

split-complementary

#3F4FCD #CD763F #96CD3F

monochromatic

#1E2874 #2B38A4 #3F4FCD #707CDA #A0A8E6

Accessibility & contrast

On white

6.54

#3F4FCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3F4FCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FCD

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FCD	#FFFFFF	#000000	##FFFFFF
##3F4FCD	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064D1

Deuteranopia (green-blind)

#0057CB

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f4fcd;
/* rgb */ color: rgb(63, 79, 205);
/* oklch */ color: oklch(49.4% 0.194 271.7);

Tailwind

colors: {
  custom: {
    50: '#8680dd',
    500: '#3f4fcd',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fcd;
$custom-light: #8680dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fcd",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 205
  },
  "hsl": {
    "h": 233.239,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49393,
    "c": 0.19372,
    "h": 271.7
  },
  "luminance": 0.11057
}

Semantic roles & 50–950 ramp

primary

#3F4FCD

secondary

#D3CC95

accent

#D046E2

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F4FCD

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

Preview Lab → · Contrast checker → · Palette generator →