#3F4DC6#3F4DC6

#3F4DC6 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.4% C 0.187 H 272.3°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DC6
RGB	rgb(63, 77, 198)
HSL	hsl(234, 54%, 51%)
HSV	hsv(234, 68%, 78%)
CMYK	cmyk(68.2%, 61.1%, 0%, 22.4%)
CIE-LAB	lab(38.62, 34.12, -64.76)
CIE-LCH	lch(38.62, 73.20, 297.78°)
OKLab	oklab(48.44% 0.0074 -0.1868)
OKLCH	oklch(48.44% 0.187 272.3)
XYZ	xyz(14.8934, 10.4403, 54.6454)
Luminance	0.1044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DC6 #C6B83F

analogous

#3F90C6 #3F4DC6 #743FC6

triadic

#3F4DC6 #C63F4D #4DC63F

tetradic

#3F4DC6 #C63F90 #C6B83F #3FC674

square

#3F4DC6 #C63F90 #C6B83F #3FC674

split-complementary

#3F4DC6 #C6743F #90C63F

monochromatic

#20286B #2E399A #3F4DC6 #6E79D4 #9DA4E2

Accessibility & contrast

On white

6.80

#3F4DC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3F4DC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DC6

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DC6	#FFFFFF	#000000	##FFFFFF
##3F4DC6	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061CA

Deuteranopia (green-blind)

#0055C4

Tritanopia (blue-blind)

#006C82

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4dc6;
/* rgb */ color: rgb(63, 77, 198);
/* oklch */ color: oklch(48.4% 0.187 272.3);

Tailwind

colors: {
  custom: {
    50: '#857ed8',
    500: '#3f4dc6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dc6;
$custom-light: #857ed8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dc6",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 198
  },
  "hsl": {
    "h": 233.778,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.48442,
    "c": 0.18694,
    "h": 272.3
  },
  "luminance": 0.10442
}

Semantic roles & 50–950 ramp

primary

#3F4DC6

secondary

#CEC893

accent

#CE4ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4DC6

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

Preview Lab → · Contrast checker → · Palette generator →