#3F4BBC#3F4BBC

#3F4BBC is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.2% C 0.176 H 273.0°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BBC
RGB	rgb(63, 75, 188)
HSL	hsl(234, 50%, 49%)
HSV	hsv(234, 66%, 74%)
CMYK	cmyk(66.5%, 60.1%, 0%, 26.3%)
CIE-LAB	lab(37.33, 31.89, -61.02)
CIE-LCH	lch(37.33, 68.86, 297.59°)
OKLab	oklab(47.24% 0.0093 -0.1758)
OKLCH	oklch(47.24% 0.176 273)
XYZ	xyz(13.6400, 9.7185, 48.7242)
Luminance	0.0972 (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

#3F4BBC #BCB03F

analogous

#3F8ABC #3F4BBC #723FBC

triadic

#3F4BBC #BC3F4B #4BBC3F

tetradic

#3F4BBC #BC3F8A #BCB03F #3FBC72

square

#3F4BBC #BC3F8A #BCB03F #3FBC72

split-complementary

#3F4BBC #BC723F #8ABC3F

monochromatic

#202660 #30398E #3F4BBC #6B74CD #999FDD

Accessibility & contrast

On white

7.13

#3F4BBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#3F4BBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BBC

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BBC	#FFFFFF	#000000	##FFFFFF
##3F4BBC	1.00	7.13	2.94	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC0

Deuteranopia (green-blind)

#0052BA

Tritanopia (blue-blind)

#00677C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4bbc;
/* rgb */ color: rgb(63, 75, 188);
/* oklch */ color: oklch(47.2% 0.176 273.0);

Tailwind

colors: {
  custom: {
    50: '#837dd1',
    500: '#3f4bbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bbc;
$custom-light: #837dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bbc",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 188
  },
  "hsl": {
    "h": 234.24,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.4724,
    "c": 0.17607,
    "h": 273
  },
  "luminance": 0.0972
}

Semantic roles & 50–950 ramp

primary

#3F4BBC

secondary

#C9C38E

accent

#CC4ED9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4BBC

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

Preview Lab → · Contrast checker → · Palette generator →