#3F4BCC#3F4BCC

#3F4BCC is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.6% C 0.197 H 272.5°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BCC
RGB	rgb(63, 75, 204)
HSL	hsl(235, 58%, 52%)
HSV	hsv(235, 69%, 80%)
CMYK	cmyk(69.1%, 63.2%, 0%, 20%)
CIE-LAB	lab(38.63, 37.46, -68.23)
CIE-LCH	lch(38.63, 77.83, 298.77°)
OKLab	oklab(48.6% 0.0087 -0.197)
OKLCH	oklch(48.6% 0.197 272.5)
XYZ	xyz(15.4614, 10.4471, 58.3167)
Luminance	0.1045 (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

#3F4BCC #CCC03F

analogous

#3F91CC #3F4BCC #7A3FCC

triadic

#3F4BCC #CC3F4B #4BCC3F

tetradic

#3F4BCC #CC3F91 #CCC03F #3FCC7A

square

#3F4BCC #CC3F91 #CCC03F #3FCC7A

split-complementary

#3F4BCC #CC7A3F #91CC3F

monochromatic

#1E2572 #2B35A3 #3F4BCC #6F78D9 #A0A6E6

Accessibility & contrast

On white

6.80

#3F4BCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3F4BCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4BCC

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BCC	#FFFFFF	#000000	##FFFFFF
##3F4BCC	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062D0

Deuteranopia (green-blind)

#0055CA

Tritanopia (blue-blind)

#006C84

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4bcc;
/* rgb */ color: rgb(63, 75, 204);
/* oklch */ color: oklch(48.6% 0.197 272.5);

Tailwind

colors: {
  custom: {
    50: '#867ddd',
    500: '#3f4bcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bcc;
$custom-light: #867ddd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bcc",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 204
  },
  "hsl": {
    "h": 234.894,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.48603,
    "c": 0.19715,
    "h": 272.5
  },
  "luminance": 0.10449
}

Semantic roles & 50–950 ramp

primary

#3F4BCC

secondary

#D2CD95

accent

#D447E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0915

muted

#7D7B83

Preview Lab

Preview with #3F4BCC

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

Preview Lab → · Contrast checker → · Palette generator →