#3F67CB#3F67CB

#3F67CB is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.9% C 0.162 H 265.0°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3F67CB
RGB	rgb(63, 103, 203)
HSL	hsl(223, 57%, 52%)
HSV	hsv(223, 69%, 80%)
CMYK	cmyk(69%, 49.3%, 0%, 20.4%)
CIE-LAB	lab(45.73, 19.34, -56.13)
CIE-LCH	lch(45.73, 59.37, 289.01°)
OKLab	oklab(53.89% -0.014 -0.1611)
OKLCH	oklch(53.89% 0.162 265)
XYZ	xyz(17.6759, 15.0673, 58.4651)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F67CB #CBA33F

analogous

#3FADCB #3F67CB #5D3FCB

triadic

#3F67CB #CB3F67 #67CB3F

tetradic

#3F67CB #CB3FAD #CBA33F #3FCB5D

square

#3F67CB #CB3FAD #CBA33F #3FCB5D

split-complementary

#3F67CB #CB5D3F #ADCB3F

monochromatic

#1F3671 #2C4DA1 #3F67CB #6F8DD8 #9FB3E5

Accessibility & contrast

On white

5.23

#3F67CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#3F67CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F67CB

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F67CB	#FFFFFF	#000000	##FFFFFF
##3F67CB	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F73CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007F8F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f67cb;
/* rgb */ color: rgb(63, 103, 203);
/* oklch */ color: oklch(53.9% 0.162 265.0);

Tailwind

colors: {
  custom: {
    50: '#8491db',
    500: '#3f67cb',
    950: '#000000',
  },
}

SCSS

$custom: #3f67cb;
$custom-light: #8491db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f67cb",
  "rgb": {
    "r": 63,
    "g": 103,
    "b": 203
  },
  "hsl": {
    "h": 222.857,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.53892,
    "c": 0.16168,
    "h": 265
  },
  "luminance": 0.15069
}

Semantic roles & 50–950 ramp

primary

#3F67CB

secondary

#D1C094

accent

#B547E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F67CB

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

Preview Lab → · Contrast checker → · Palette generator →