#3F4EC0#3F4EC0

#3F4EC0 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.1% C 0.178 H 272.2°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EC0
RGB	rgb(63, 78, 192)
HSL	hsl(233, 51%, 50%)
HSV	hsv(233, 67%, 75%)
CMYK	cmyk(67.2%, 59.4%, 0%, 24.7%)
CIE-LAB	lab(38.39, 31.39, -61.64)
CIE-LCH	lch(38.39, 69.17, 296.99°)
OKLab	oklab(48.12% 0.0067 -0.1776)
OKLCH	oklch(48.12% 0.178 272.2)
XYZ	xyz(14.2855, 10.3100, 51.0961)
Luminance	0.1031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EC0 #C0B13F

analogous

#3F8FC0 #3F4EC0 #703FC0

triadic

#3F4EC0 #C03F4E #4EC03F

tetradic

#3F4EC0 #C03F8F #C0B13F #3FC070

square

#3F4EC0 #C03F8F #C0B13F #3FC070

split-complementary

#3F4EC0 #C0703F #8FC03F

monochromatic

#212964 #303B92 #3F4EC0 #6D78CF #9BA3DE

Accessibility & contrast

On white

6.86

#3F4EC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3F4EC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EC0

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EC0	#FFFFFF	#000000	##FFFFFF
##3F4EC0	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C4

Deuteranopia (green-blind)

#0055BE

Tritanopia (blue-blind)

#006A7F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f4ec0;
/* rgb */ color: rgb(63, 78, 192);
/* oklch */ color: oklch(48.1% 0.178 272.2);

Tailwind

colors: {
  custom: {
    50: '#837fd4',
    500: '#3f4ec0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ec0;
$custom-light: #837fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ec0",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 192
  },
  "hsl": {
    "h": 233.023,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.48124,
    "c": 0.17773,
    "h": 272.2
  },
  "luminance": 0.10311
}

Semantic roles & 50–950 ramp

primary

#3F4EC0

secondary

#CAC491

accent

#CA4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F4EC0

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

Preview Lab → · Contrast checker → · Palette generator →