#3F50C0#3F50C0

#3F50C0 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.5% C 0.175 H 271.7°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F50C0
RGB	rgb(63, 80, 192)
HSL	hsl(232, 51%, 50%)
HSV	hsv(232, 67%, 75%)
CMYK	cmyk(67.2%, 58.3%, 0%, 24.7%)
CIE-LAB	lab(38.90, 30.11, -60.82)
CIE-LCH	lch(38.90, 67.87, 296.34°)
OKLab	oklab(48.5% 0.0051 -0.1752)
OKLCH	oklch(48.5% 0.175 271.7)
XYZ	xyz(14.4298, 10.5985, 51.1442)
Luminance	0.1060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50C0 #C0AF3F

analogous

#3F90C0 #3F50C0 #6F3FC0

triadic

#3F50C0 #C03F50 #50C03F

tetradic

#3F50C0 #C03F90 #C0AF3F #3FC06F

square

#3F50C0 #C03F90 #C0AF3F #3FC06F

split-complementary

#3F50C0 #C06F3F #90C03F

monochromatic

#212A64 #303D92 #3F50C0 #6D7ACF #9BA4DE

Accessibility & contrast

On white

6.73

#3F50C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3F50C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F50C0

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50C0	#FFFFFF	#000000	##FFFFFF
##3F50C0	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C4

Deuteranopia (green-blind)

#0056BE

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f50c0;
/* rgb */ color: rgb(63, 80, 192);
/* oklch */ color: oklch(48.5% 0.175 271.7);

Tailwind

colors: {
  custom: {
    50: '#8381d4',
    500: '#3f50c0',
    950: '#000000',
  },
}

SCSS

$custom: #3f50c0;
$custom-light: #8381d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50c0",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 192
  },
  "hsl": {
    "h": 232.093,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.48498,
    "c": 0.17524,
    "h": 271.7
  },
  "luminance": 0.106
}

Semantic roles & 50–950 ramp

primary

#3F50C0

secondary

#CAC391

accent

#C84EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F50C0

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

Preview Lab → · Contrast checker → · Palette generator →