#3F62BB#3F62BB

#3F62BB is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.7% C 0.146 H 265.5°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F62BB
RGB	rgb(63, 98, 187)
HSL	hsl(223, 50%, 49%)
HSV	hsv(223, 66%, 73%)
CMYK	cmyk(66.3%, 47.6%, 0%, 26.7%)
CIE-LAB	lab(43.33, 16.76, -50.74)
CIE-LCH	lch(43.33, 53.44, 288.28°)
OKLab	oklab(51.73% -0.0115 -0.1453)
OKLCH	oklch(51.73% 0.146 265.5)
XYZ	xyz(15.3841, 13.3785, 48.7756)
Luminance	0.1338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F62BB #BB983F

analogous

#3FA0BB #3F62BB #5A3FBB

triadic

#3F62BB #BB3F62 #62BB3F

tetradic

#3F62BB #BB3FA0 #BB983F #3FBB5A

square

#3F62BB #BB3FA0 #BB983F #3FBB5A

split-complementary

#3F62BB #BB5A3F #A0BB3F

monochromatic

#20325F #304A8D #3F62BB #6A86CD #98ABDC

Accessibility & contrast

On white

5.71

#3F62BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#3F62BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F62BB

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F62BB	#FFFFFF	#000000	##FFFFFF
##3F62BB	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346CBE

Deuteranopia (green-blind)

#1A61B9

Tritanopia (blue-blind)

#007785

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f62bb;
/* rgb */ color: rgb(63, 98, 187);
/* oklch */ color: oklch(51.7% 0.146 265.5);

Tailwind

colors: {
  custom: {
    50: '#818ed0',
    500: '#3f62bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f62bb;
$custom-light: #818ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f62bb",
  "rgb": {
    "r": 63,
    "g": 98,
    "b": 187
  },
  "hsl": {
    "h": 223.065,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.51732,
    "c": 0.14574,
    "h": 265.5
  },
  "luminance": 0.1338
}

Semantic roles & 50–950 ramp

primary

#3F62BB

secondary

#C8B88E

accent

#B24FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3F62BB

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

Preview Lab → · Contrast checker → · Palette generator →