#3F44BA#3F44BA

#3F44BA is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.8% C 0.182 H 274.7°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F44BA
RGB	rgb(63, 68, 186)
HSL	hsl(238, 49%, 49%)
HSV	hsv(238, 66%, 73%)
CMYK	cmyk(66.1%, 63.4%, 0%, 27.1%)
CIE-LAB	lab(35.47, 35.61, -62.89)
CIE-LCH	lch(35.47, 72.27, 299.52°)
OKLab	oklab(45.82% 0.015 -0.1813)
OKLCH	oklch(45.82% 0.182 274.7)
XYZ	xyz(12.9770, 8.7350, 47.4470)
Luminance	0.0874 (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

#3F44BA #BAB53F

analogous

#3F82BA #3F44BA #783FBA

triadic

#3F44BA #BA3F44 #44BA3F

tetradic

#3F44BA #BA3F82 #BAB53F #3FBA78

square

#3F44BA #BA3F82 #BAB53F #3FBA78

split-complementary

#3F44BA #BA783F #82BA3F

monochromatic

#20235F #30338C #3F44BA #6A6ECC #979ADC

Accessibility & contrast

On white

7.64

#3F44BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#3F44BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F44BA

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F44BA	#FFFFFF	#000000	##FFFFFF
##3F44BA	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BE

Deuteranopia (green-blind)

#004EB8

Tritanopia (blue-blind)

#006278

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f44ba;
/* rgb */ color: rgb(63, 68, 186);
/* oklch */ color: oklch(45.8% 0.182 274.7);

Tailwind

colors: {
  custom: {
    50: '#8378d0',
    500: '#3f44ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f44ba;
$custom-light: #8378d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f44ba",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 186
  },
  "hsl": {
    "h": 237.561,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45817,
    "c": 0.18197,
    "h": 274.7
  },
  "luminance": 0.08736
}

Semantic roles & 50–950 ramp

primary

#3F44BA

secondary

#C8C58D

accent

#D34FD9

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F44BA

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

Preview Lab → · Contrast checker → · Palette generator →