#3F68B2#3F68B2

#3F68B2 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.4% C 0.126 H 261.3°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F68B2
RGB	rgb(63, 104, 178)
HSL	hsl(219, 48%, 47%)
HSV	hsv(219, 65%, 70%)
CMYK	cmyk(64.6%, 41.6%, 0%, 30.2%)
CIE-LAB	lab(44.48, 9.73, -43.65)
CIE-LCH	lch(44.48, 44.73, 282.56°)
OKLab	oklab(52.44% -0.0191 -0.1244)
OKLCH	oklch(52.44% 0.126 261.3)
XYZ	xyz(15.0333, 14.1703, 44.0537)
Luminance	0.1417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F68B2 #B2893F

analogous

#3FA1B2 #3F68B2 #503FB2

triadic

#3F68B2 #B23F68 #68B23F

tetradic

#3F68B2 #B23FA1 #B2893F #3FB250

square

#3F68B2 #B23FA1 #B2893F #3FB250

split-complementary

#3F68B2 #B2503F #A1B23F

monochromatic

#1F3358 #2F4E85 #3F68B2 #6689C9 #93ACD9

Accessibility & contrast

On white

5.48

#3F68B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3F68B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F68B2

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F68B2	#FFFFFF	#000000	##FFFFFF
##3F68B2	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#466FB5

Deuteranopia (green-blind)

#3564B0

Tritanopia (blue-blind)

#007984

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f68b2;
/* rgb */ color: rgb(63, 104, 178);
/* oklch */ color: oklch(52.4% 0.126 261.3);

Tailwind

colors: {
  custom: {
    50: '#7f92c9',
    500: '#3f68b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f68b2;
$custom-light: #7f92c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f68b2",
  "rgb": {
    "r": 63,
    "g": 104,
    "b": 178
  },
  "hsl": {
    "h": 218.609,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.5244,
    "c": 0.12583,
    "h": 261.3
  },
  "luminance": 0.14172
}

Semantic roles & 50–950 ramp

primary

#3F68B2

secondary

#C4AF89

accent

#A750D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0D13

muted

#7C7D82

Preview Lab

Preview with #3F68B2

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

Preview Lab → · Contrast checker → · Palette generator →