#3F67BC#3F67BC

#3F67BC is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.9% C 0.141 H 263.4°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3F67BC
RGB	rgb(63, 103, 188)
HSL	hsl(221, 50%, 49%)
HSV	hsv(221, 66%, 74%)
CMYK	cmyk(66.5%, 45.2%, 0%, 26.3%)
CIE-LAB	lab(44.78, 13.94, -48.99)
CIE-LCH	lch(44.78, 50.93, 285.88°)
OKLab	oklab(52.87% -0.0162 -0.14)
OKLCH	oklch(52.87% 0.141 263.4)
XYZ	xyz(15.9741, 14.3866, 49.5022)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F67BC #BC943F

analogous

#3FA6BC #3F67BC #563FBC

triadic

#3F67BC #BC3F67 #67BC3F

tetradic

#3F67BC #BC3FA6 #BC943F #3FBC56

square

#3F67BC #BC3FA6 #BC943F #3FBC56

split-complementary

#3F67BC #BC563F #A6BC3F

monochromatic

#203560 #304E8E #3F67BC #6B8ACD #99AEDD

Accessibility & contrast

On white

5.42

#3F67BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3F67BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F67BC

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F67BC	#FFFFFF	#000000	##FFFFFF
##3F67BC	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D70BF

Deuteranopia (green-blind)

#2765BA

Tritanopia (blue-blind)

#007B88

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f67bc;
/* rgb */ color: rgb(63, 103, 188);
/* oklch */ color: oklch(52.9% 0.141 263.4);

Tailwind

colors: {
  custom: {
    50: '#8191d1',
    500: '#3f67bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f67bc;
$custom-light: #8191d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f67bc",
  "rgb": {
    "r": 63,
    "g": 103,
    "b": 188
  },
  "hsl": {
    "h": 220.8,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.52866,
    "c": 0.14098,
    "h": 263.4
  },
  "luminance": 0.14388
}

Semantic roles & 50–950 ramp

primary

#3F67BC

secondary

#C9B68E

accent

#AD4ED9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3F67BC

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

Preview Lab → · Contrast checker → · Palette generator →