#3F4DC0#3F4DC0

#3F4DC0 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.9% C 0.179 H 272.4°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DC0
RGB	rgb(63, 77, 192)
HSL	hsl(233, 51%, 50%)
HSV	hsv(233, 67%, 75%)
CMYK	cmyk(67.2%, 59.9%, 0%, 24.7%)
CIE-LAB	lab(38.14, 32.02, -62.04)
CIE-LCH	lch(38.14, 69.82, 297.30°)
OKLab	oklab(47.94% 0.0076 -0.1788)
OKLCH	oklch(47.94% 0.179 272.4)
XYZ	xyz(14.2150, 10.1690, 51.0726)
Luminance	0.1017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DC0 #C0B23F

analogous

#3F8EC0 #3F4DC0 #713FC0

triadic

#3F4DC0 #C03F4D #4DC03F

tetradic

#3F4DC0 #C03F8E #C0B23F #3FC071

square

#3F4DC0 #C03F8E #C0B23F #3FC071

split-complementary

#3F4DC0 #C0713F #8EC03F

monochromatic

#212864 #303B92 #3F4DC0 #6D78CF #9BA2DE

Accessibility & contrast

On white

6.92

#3F4DC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3F4DC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DC0

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DC0	#FFFFFF	#000000	##FFFFFF
##3F4DC0	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C4

Deuteranopia (green-blind)

#0054BE

Tritanopia (blue-blind)

#006A7F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f4dc0;
/* rgb */ color: rgb(63, 77, 192);
/* oklch */ color: oklch(47.9% 0.179 272.4);

Tailwind

colors: {
  custom: {
    50: '#837ed4',
    500: '#3f4dc0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dc0;
$custom-light: #837ed4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dc0",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 192
  },
  "hsl": {
    "h": 233.488,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.4794,
    "c": 0.17896,
    "h": 272.4
  },
  "luminance": 0.1017
}

Semantic roles & 50–950 ramp

primary

#3F4DC0

secondary

#CAC491

accent

#CB4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F4DC0

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

Preview Lab → · Contrast checker → · Palette generator →