#3F67BB#3F67BB

#3F67BB is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.8% C 0.140 H 263.3°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3F67BB
RGB	rgb(63, 103, 187)
HSL	hsl(221, 50%, 49%)
HSV	hsv(221, 66%, 73%)
CMYK	cmyk(66.3%, 44.9%, 0%, 26.7%)
CIE-LAB	lab(44.72, 13.58, -48.51)
CIE-LCH	lch(44.72, 50.37, 285.64°)
OKLab	oklab(52.8% -0.0164 -0.1386)
OKLCH	oklch(52.8% 0.14 263.3)
XYZ	xyz(15.8666, 14.3436, 48.9365)
Luminance	0.1434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F67BB #BB933F

analogous

#3FA5BB #3F67BB #553FBB

triadic

#3F67BB #BB3F67 #67BB3F

tetradic

#3F67BB #BB3FA5 #BB933F #3FBB55

square

#3F67BB #BB3FA5 #BB933F #3FBB55

split-complementary

#3F67BB #BB553F #A5BB3F

monochromatic

#20355F #304E8D #3F67BB #6A8ACD #98AEDC

Accessibility & contrast

On white

5.43

#3F67BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3F67BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F67BB

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F67BB	#FFFFFF	#000000	##FFFFFF
##3F67BB	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E70BE

Deuteranopia (green-blind)

#2964B9

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f67bb;
/* rgb */ color: rgb(63, 103, 187);
/* oklch */ color: oklch(52.8% 0.140 263.3);

Tailwind

colors: {
  custom: {
    50: '#8191d0',
    500: '#3f67bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f67bb;
$custom-light: #8191d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f67bb",
  "rgb": {
    "r": 63,
    "g": 103,
    "b": 187
  },
  "hsl": {
    "h": 220.645,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.528,
    "c": 0.13959,
    "h": 263.3
  },
  "luminance": 0.14345
}

Semantic roles & 50–950 ramp

primary

#3F67BB

secondary

#C8B58E

accent

#AC4FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3F67BB

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

Preview Lab → · Contrast checker → · Palette generator →