#3F4AB2#3F4AB2

#3F4AB2 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.2% C 0.164 H 273.6°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#3F4AB2
RGB	rgb(63, 74, 178)
HSL	hsl(234, 48%, 47%)
HSV	hsv(234, 65%, 70%)
CMYK	cmyk(64.6%, 58.4%, 0%, 30.2%)
CIE-LAB	lab(36.30, 29.03, -56.80)
CIE-LCH	lch(36.30, 63.79, 297.07°)
OKLab	oklab(46.24% 0.0102 -0.1634)
OKLCH	oklch(46.24% 0.164 273.6)
XYZ	xyz(12.5319, 9.1676, 43.2200)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4AB2 #B2A73F

analogous

#3F84B2 #3F4AB2 #6E3FB2

triadic

#3F4AB2 #B23F4A #4AB23F

tetradic

#3F4AB2 #B23F84 #B2A73F #3FB26E

square

#3F4AB2 #B23F84 #B2A73F #3FB26E

split-complementary

#3F4AB2 #B26E3F #84B23F

monochromatic

#1F2458 #2F3785 #3F4AB2 #666FC9 #9399D9

Accessibility & contrast

On white

7.41

#3F4AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3F4AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4AB2

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4AB2	#FFFFFF	#000000	##FFFFFF
##3F4AB2	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB5

Deuteranopia (green-blind)

#0050B0

Tritanopia (blue-blind)

#006377

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f4ab2;
/* rgb */ color: rgb(63, 74, 178);
/* oklch */ color: oklch(46.2% 0.164 273.6);

Tailwind

colors: {
  custom: {
    50: '#817cca',
    500: '#3f4ab2',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ab2;
$custom-light: #817cca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ab2",
  "rgb": {
    "r": 63,
    "g": 74,
    "b": 178
  },
  "hsl": {
    "h": 234.261,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46235,
    "c": 0.16375,
    "h": 273.6
  },
  "luminance": 0.09169
}

Semantic roles & 50–950 ramp

primary

#3F4AB2

secondary

#C4BE89

accent

#CA50D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F4AB2

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

Preview Lab → · Contrast checker → · Palette generator →