#3F4CCA#3F4CCA

#3F4CCA is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.6% C 0.193 H 272.4°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CCA
RGB	rgb(63, 76, 202)
HSL	hsl(234, 57%, 52%)
HSV	hsv(234, 69%, 79%)
CMYK	cmyk(68.8%, 62.4%, 0%, 20.8%)
CIE-LAB	lab(38.71, 36.14, -66.95)
CIE-LCH	lch(38.71, 76.08, 298.36°)
OKLab	oklab(48.6% 0.008 -0.1932)
OKLCH	oklch(48.6% 0.193 272.4)
XYZ	xyz(15.2914, 10.4885, 57.0843)
Luminance	0.1049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CCA #CABD3F

analogous

#3F92CA #3F4CCA #773FCA

triadic

#3F4CCA #CA3F4C #4CCA3F

tetradic

#3F4CCA #CA3F92 #CABD3F #3FCA77

square

#3F4CCA #CA3F92 #CABD3F #3FCA77

split-complementary

#3F4CCA #CA773F #92CA3F

monochromatic

#1F2670 #2C37A0 #3F4CCA #6F79D7 #9FA5E4

Accessibility & contrast

On white

6.78

#3F4CCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3F4CCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4CCA

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CCA	#FFFFFF	#000000	##FFFFFF
##3F4CCA	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CE

Deuteranopia (green-blind)

#0055C8

Tritanopia (blue-blind)

#006C84

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4cca;
/* rgb */ color: rgb(63, 76, 202);
/* oklch */ color: oklch(48.6% 0.193 272.4);

Tailwind

colors: {
  custom: {
    50: '#857edb',
    500: '#3f4cca',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cca;
$custom-light: #857edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cca",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 202
  },
  "hsl": {
    "h": 234.388,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.48604,
    "c": 0.19338,
    "h": 272.4
  },
  "luminance": 0.1049
}

Semantic roles & 50–950 ramp

primary

#3F4CCA

secondary

#D1CB94

accent

#D248E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F4CCA

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

Preview Lab → · Contrast checker → · Palette generator →