#3F4FC3#3F4FC3

#3F4FC3 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.6% C 0.181 H 271.9°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FC3
RGB	rgb(63, 79, 195)
HSL	hsl(233, 52%, 51%)
HSV	hsv(233, 68%, 76%)
CMYK	cmyk(67.7%, 59.5%, 0%, 23.5%)
CIE-LAB	lab(38.88, 31.81, -62.60)
CIE-LCH	lch(38.88, 70.22, 296.93°)
OKLab	oklab(48.56% 0.0059 -0.1804)
OKLCH	oklch(48.56% 0.181 271.9)
XYZ	xyz(14.6929, 10.5875, 52.8885)
Luminance	0.1059 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FC3 #C3B33F

analogous

#3F91C3 #3F4FC3 #713FC3

triadic

#3F4FC3 #C33F4F #4FC33F

tetradic

#3F4FC3 #C33F91 #C3B33F #3FC371

square

#3F4FC3 #C33F91 #C3B33F #3FC371

split-complementary

#3F4FC3 #C3713F #91C33F

monochromatic

#202967 #2F3B96 #3F4FC3 #6E7AD2 #9CA4E0

Accessibility & contrast

On white

6.74

#3F4FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3F4FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FC3

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FC3	#FFFFFF	#000000	##FFFFFF
##3F4FC3	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C7

Deuteranopia (green-blind)

#0056C1

Tritanopia (blue-blind)

#006C81

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4fc3;
/* rgb */ color: rgb(63, 79, 195);
/* oklch */ color: oklch(48.6% 0.181 271.9);

Tailwind

colors: {
  custom: {
    50: '#8480d6',
    500: '#3f4fc3',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fc3;
$custom-light: #8480d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fc3",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 195
  },
  "hsl": {
    "h": 232.727,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.48556,
    "c": 0.18052,
    "h": 271.9
  },
  "luminance": 0.10589
}

Semantic roles & 50–950 ramp

primary

#3F4FC3

secondary

#CCC592

accent

#CA4CDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F4FC3

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

Preview Lab → · Contrast checker → · Palette generator →