#3F4FCA#3F4FCA

#3F4FCA is a mid, vivid blue. Relative luminance 0.109; OKLCH L 49.1% C 0.190 H 271.8°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FCA
RGB	rgb(63, 79, 202)
HSL	hsl(233, 57%, 52%)
HSV	hsv(233, 69%, 79%)
CMYK	cmyk(68.8%, 60.9%, 0%, 20.8%)
CIE-LAB	lab(39.43, 34.26, -65.76)
CIE-LCH	lch(39.43, 74.15, 297.52°)
OKLab	oklab(49.14% 0.0058 -0.1897)
OKLCH	oklch(49.14% 0.19 271.8)
XYZ	xyz(15.5030, 10.9115, 57.1548)
Luminance	0.1091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FCA #CABA3F

analogous

#3F94CA #3F4FCA #753FCA

triadic

#3F4FCA #CA3F4F #4FCA3F

tetradic

#3F4FCA #CA3F94 #CABA3F #3FCA75

square

#3F4FCA #CA3F94 #CABA3F #3FCA75

split-complementary

#3F4FCA #CA753F #94CA3F

monochromatic

#1F2870 #2C39A0 #3F4FCA #6F7BD7 #9FA7E4

Accessibility & contrast

On white

6.60

#3F4FCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3F4FCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FCA

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FCA	#FFFFFF	#000000	##FFFFFF
##3F4FCA	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CE

Deuteranopia (green-blind)

#0057C8

Tritanopia (blue-blind)

#006E85

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f4fca;
/* rgb */ color: rgb(63, 79, 202);
/* oklch */ color: oklch(49.1% 0.190 271.8);

Tailwind

colors: {
  custom: {
    50: '#8580db',
    500: '#3f4fca',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fca;
$custom-light: #8580db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fca",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 202
  },
  "hsl": {
    "h": 233.094,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.4914,
    "c": 0.1898,
    "h": 271.8
  },
  "luminance": 0.10913
}

Semantic roles & 50–950 ramp

primary

#3F4FCA

secondary

#D1CA94

accent

#CE48E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4FCA

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

Preview Lab → · Contrast checker → · Palette generator →