#3F4FC6#3F4FC6

#3F4FC6 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.8% C 0.185 H 271.8°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FC6
RGB	rgb(63, 79, 198)
HSL	hsl(233, 54%, 51%)
HSV	hsv(233, 68%, 78%)
CMYK	cmyk(68.2%, 60.1%, 0%, 22.4%)
CIE-LAB	lab(39.11, 32.86, -63.96)
CIE-LCH	lch(39.11, 71.91, 297.19°)
OKLab	oklab(48.81% 0.0059 -0.1844)
OKLCH	oklch(48.81% 0.185 271.8)
XYZ	xyz(15.0355, 10.7245, 54.6928)
Luminance	0.1073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FC6 #C6B63F

analogous

#3F92C6 #3F4FC6 #723FC6

triadic

#3F4FC6 #C63F4F #4FC63F

tetradic

#3F4FC6 #C63F92 #C6B63F #3FC672

square

#3F4FC6 #C63F92 #C6B63F #3FC672

split-complementary

#3F4FC6 #C6723F #92C63F

monochromatic

#20296B #2E3B9A #3F4FC6 #6E7AD4 #9DA6E2

Accessibility & contrast

On white

6.68

#3F4FC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3F4FC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FC6

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FC6	#FFFFFF	#000000	##FFFFFF
##3F4FC6	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CA

Deuteranopia (green-blind)

#0056C4

Tritanopia (blue-blind)

#006D83

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4fc6;
/* rgb */ color: rgb(63, 79, 198);
/* oklch */ color: oklch(48.8% 0.185 271.8);

Tailwind

colors: {
  custom: {
    50: '#8480d8',
    500: '#3f4fc6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fc6;
$custom-light: #8480d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fc6",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 198
  },
  "hsl": {
    "h": 232.889,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.48805,
    "c": 0.18451,
    "h": 271.8
  },
  "luminance": 0.10726
}

Semantic roles & 50–950 ramp

primary

#3F4FC6

secondary

#CEC793

accent

#CC4ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4FC6

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

Preview Lab → · Contrast checker → · Palette generator →