#3F50C6#3F50C6

#3F50C6 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 49.0% C 0.183 H 271.6°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F50C6
RGB	rgb(63, 80, 198)
HSL	hsl(232, 54%, 51%)
HSV	hsv(232, 68%, 78%)
CMYK	cmyk(68.2%, 59.6%, 0%, 22.4%)
CIE-LAB	lab(39.36, 32.23, -63.56)
CIE-LCH	lch(39.36, 71.26, 296.89°)
OKLab	oklab(48.99% 0.0051 -0.1832)
OKLCH	oklch(48.99% 0.183 271.6)
XYZ	xyz(15.1082, 10.8699, 54.7170)
Luminance	0.1087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50C6 #C6B53F

analogous

#3F94C6 #3F50C6 #713FC6

triadic

#3F50C6 #C63F50 #50C63F

tetradic

#3F50C6 #C63F94 #C6B53F #3FC671

square

#3F50C6 #C63F94 #C6B53F #3FC671

split-complementary

#3F50C6 #C6713F #94C63F

monochromatic

#20296B #2E3B9A #3F50C6 #6E7BD4 #9DA6E2

Accessibility & contrast

On white

6.62

#3F50C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3F50C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F50C6

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50C6	#FFFFFF	#000000	##FFFFFF
##3F50C6	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CA

Deuteranopia (green-blind)

#0057C4

Tritanopia (blue-blind)

#006D83

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f50c6;
/* rgb */ color: rgb(63, 80, 198);
/* oklch */ color: oklch(49.0% 0.183 271.6);

Tailwind

colors: {
  custom: {
    50: '#8481d8',
    500: '#3f50c6',
    950: '#000000',
  },
}

SCSS

$custom: #3f50c6;
$custom-light: #8481d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50c6",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 198
  },
  "hsl": {
    "h": 232.444,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.48988,
    "c": 0.18329,
    "h": 271.6
  },
  "luminance": 0.10871
}

Semantic roles & 50–950 ramp

primary

#3F50C6

secondary

#CEC793

accent

#CB4ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F50C6

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

Preview Lab → · Contrast checker → · Palette generator →