#3F4FC0#3F4FC0

#3F4FC0 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.3% C 0.176 H 271.9°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FC0
RGB	rgb(63, 79, 192)
HSL	hsl(233, 51%, 50%)
HSV	hsv(233, 67%, 75%)
CMYK	cmyk(67.2%, 58.9%, 0%, 24.7%)
CIE-LAB	lab(38.64, 30.75, -61.23)
CIE-LCH	lch(38.64, 68.52, 296.67°)
OKLab	oklab(48.31% 0.0059 -0.1764)
OKLCH	oklch(48.31% 0.176 271.9)
XYZ	xyz(14.3571, 10.4532, 51.1200)
Luminance	0.1045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FC0 #C0B03F

analogous

#3F90C0 #3F4FC0 #6F3FC0

triadic

#3F4FC0 #C03F4F #4FC03F

tetradic

#3F4FC0 #C03F90 #C0B03F #3FC06F

square

#3F4FC0 #C03F90 #C0B03F #3FC06F

split-complementary

#3F4FC0 #C06F3F #90C03F

monochromatic

#212964 #303C92 #3F4FC0 #6D79CF #9BA3DE

Accessibility & contrast

On white

6.79

#3F4FC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3F4FC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FC0

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FC0	#FFFFFF	#000000	##FFFFFF
##3F4FC0	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C4

Deuteranopia (green-blind)

#0055BE

Tritanopia (blue-blind)

#006B80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4fc0;
/* rgb */ color: rgb(63, 79, 192);
/* oklch */ color: oklch(48.3% 0.176 271.9);

Tailwind

colors: {
  custom: {
    50: '#8380d4',
    500: '#3f4fc0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fc0;
$custom-light: #8380d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fc0",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 192
  },
  "hsl": {
    "h": 232.558,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.4831,
    "c": 0.17649,
    "h": 271.9
  },
  "luminance": 0.10454
}

Semantic roles & 50–950 ramp

primary

#3F4FC0

secondary

#CAC391

accent

#C94EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F4FC0

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

Preview Lab → · Contrast checker → · Palette generator →