#3F4BBE#3F4BBE

#3F4BBE is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.4% C 0.179 H 273.0°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BBE
RGB	rgb(63, 75, 190)
HSL	hsl(234, 50%, 50%)
HSV	hsv(234, 67%, 75%)
CMYK	cmyk(66.8%, 60.5%, 0%, 25.5%)
CIE-LAB	lab(37.49, 32.59, -61.94)
CIE-LCH	lch(37.49, 69.99, 297.75°)
OKLab	oklab(47.41% 0.0092 -0.1785)
OKLCH	oklch(47.41% 0.179 273)
XYZ	xyz(13.8571, 9.8054, 49.8676)
Luminance	0.0981 (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

#3F4BBE #BEB23F

analogous

#3F8ABE #3F4BBE #733FBE

triadic

#3F4BBE #BE3F4B #4BBE3F

tetradic

#3F4BBE #BE3F8A #BEB23F #3FBE73

square

#3F4BBE #BE3F8A #BEB23F #3FBE73

split-complementary

#3F4BBE #BE733F #8ABE3F

monochromatic

#212762 #303990 #3F4BBE #6C75CE #9AA0DD

Accessibility & contrast

On white

7.09

#3F4BBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#3F4BBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BBE

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BBE	#FFFFFF	#000000	##FFFFFF
##3F4BBE	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC2

Deuteranopia (green-blind)

#0053BC

Tritanopia (blue-blind)

#00687D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4bbe;
/* rgb */ color: rgb(63, 75, 190);
/* oklch */ color: oklch(47.4% 0.179 273.0);

Tailwind

colors: {
  custom: {
    50: '#837dd2',
    500: '#3f4bbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bbe;
$custom-light: #837dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bbe",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 190
  },
  "hsl": {
    "h": 234.331,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.47407,
    "c": 0.17875,
    "h": 273
  },
  "luminance": 0.09807
}

Semantic roles & 50–950 ramp

primary

#3F4BBE

secondary

#C9C48F

accent

#CD4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4BBE

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

Preview Lab → · Contrast checker → · Palette generator →