#3F44C1#3F44C1

#3F44C1 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.4% C 0.191 H 274.3°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F44C1
RGB	rgb(63, 68, 193)
HSL	hsl(238, 51%, 50%)
HSV	hsv(238, 67%, 76%)
CMYK	cmyk(67.4%, 64.8%, 0%, 24.3%)
CIE-LAB	lab(36.06, 38.01, -66.03)
CIE-LCH	lch(36.06, 76.19, 299.93°)
OKLab	oklab(46.43% 0.0145 -0.1906)
OKLCH	oklch(46.43% 0.191 274.3)
XYZ	xyz(13.7395, 9.0400, 51.4626)
Luminance	0.0904 (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

#3F44C1 #C1BC3F

analogous

#3F85C1 #3F44C1 #7B3FC1

triadic

#3F44C1 #C13F44 #44C13F

tetradic

#3F44C1 #C13F85 #C1BC3F #3FC17B

square

#3F44C1 #C13F85 #C1BC3F #3FC17B

split-complementary

#3F44C1 #C17B3F #85C13F

monochromatic

#212365 #303393 #3F44C1 #6D71D0 #9C9EDF

Accessibility & contrast

On white

7.48

#3F44C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3F44C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F44C1

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F44C1	#FFFFFF	#000000	##FFFFFF
##3F44C1	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC5

Deuteranopia (green-blind)

#004FBF

Tritanopia (blue-blind)

#00647C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f44c1;
/* rgb */ color: rgb(63, 68, 193);
/* oklch */ color: oklch(46.4% 0.191 274.3);

Tailwind

colors: {
  custom: {
    50: '#8478d5',
    500: '#3f44c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f44c1;
$custom-light: #8478d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f44c1",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 193
  },
  "hsl": {
    "h": 237.692,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.46433,
    "c": 0.19112,
    "h": 274.3
  },
  "luminance": 0.09041
}

Semantic roles & 50–950 ramp

primary

#3F44C1

secondary

#CBC991

accent

#D54DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F44C1

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

Preview Lab → · Contrast checker → · Palette generator →