#3F68BB#3F68BB

#3F68BB is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.0% C 0.138 H 262.8°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F68BB
RGB	rgb(63, 104, 187)
HSL	hsl(220, 50%, 49%)
HSV	hsv(220, 66%, 73%)
CMYK	cmyk(66.3%, 44.4%, 0%, 26.7%)
CIE-LAB	lab(45.00, 12.94, -48.06)
CIE-LCH	lch(45.00, 49.77, 285.07°)
OKLab	oklab(53.02% -0.0174 -0.1373)
OKLCH	oklch(53.02% 0.138 262.8)
XYZ	xyz(15.9667, 14.5437, 48.9698)
Luminance	0.1454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F68BB #BB923F

analogous

#3FA6BB #3F68BB #543FBB

triadic

#3F68BB #BB3F68 #68BB3F

tetradic

#3F68BB #BB3FA6 #BB923F #3FBB54

square

#3F68BB #BB3FA6 #BB923F #3FBB54

split-complementary

#3F68BB #BB543F #A6BB3F

monochromatic

#20355F #304F8D #3F68BB #6A8BCD #98AFDC

Accessibility & contrast

On white

5.37

#3F68BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#3F68BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F68BB

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F68BB	#FFFFFF	#000000	##FFFFFF
##3F68BB	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4071BE

Deuteranopia (green-blind)

#2B65B9

Tritanopia (blue-blind)

#007B88

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f68bb;
/* rgb */ color: rgb(63, 104, 187);
/* oklch */ color: oklch(53.0% 0.138 262.8);

Tailwind

colors: {
  custom: {
    50: '#8192d0',
    500: '#3f68bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f68bb;
$custom-light: #8192d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f68bb",
  "rgb": {
    "r": 63,
    "g": 104,
    "b": 187
  },
  "hsl": {
    "h": 220.161,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.53016,
    "c": 0.13838,
    "h": 262.8
  },
  "luminance": 0.14545
}

Semantic roles & 50–950 ramp

primary

#3F68BB

secondary

#C8B58E

accent

#AB4FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0D14

muted

#7C7D82

Preview Lab

Preview with #3F68BB

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

Preview Lab → · Contrast checker → · Palette generator →