#3F50C1#3F50C1

#3F50C1 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.6% C 0.177 H 271.7°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F50C1
RGB	rgb(63, 80, 193)
HSL	hsl(232, 51%, 50%)
HSV	hsv(232, 67%, 76%)
CMYK	cmyk(67.4%, 58.5%, 0%, 24.3%)
CIE-LAB	lab(38.97, 30.47, -61.28)
CIE-LCH	lch(38.97, 68.43, 296.44°)
OKLab	oklab(48.58% 0.0051 -0.1765)
OKLCH	oklch(48.58% 0.177 271.7)
XYZ	xyz(14.5410, 10.6430, 51.7297)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50C1 #C1B03F

analogous

#3F91C1 #3F50C1 #6F3FC1

triadic

#3F50C1 #C13F50 #50C13F

tetradic

#3F50C1 #C13F91 #C1B03F #3FC16F

square

#3F50C1 #C13F91 #C1B03F #3FC16F

split-complementary

#3F50C1 #C16F3F #91C13F

monochromatic

#212A65 #303D93 #3F50C1 #6D7AD0 #9CA4DF

Accessibility & contrast

On white

6.71

#3F50C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F50C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F50C1

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50C1	#FFFFFF	#000000	##FFFFFF
##3F50C1	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C5

Deuteranopia (green-blind)

#0056BF

Tritanopia (blue-blind)

#006C81

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f50c1;
/* rgb */ color: rgb(63, 80, 193);
/* oklch */ color: oklch(48.6% 0.177 271.7);

Tailwind

colors: {
  custom: {
    50: '#8381d5',
    500: '#3f50c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f50c1;
$custom-light: #8381d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50c1",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 193
  },
  "hsl": {
    "h": 232.154,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.48579,
    "c": 0.17659,
    "h": 271.7
  },
  "luminance": 0.10644
}

Semantic roles & 50–950 ramp

primary

#3F50C1

secondary

#CBC391

accent

#C84DDB

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F50C1

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

Preview Lab → · Contrast checker → · Palette generator →