#3F6FDE#3F6FDE

#3F6FDE is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.9% C 0.178 H 264.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FDE
RGB	rgb(63, 111, 222)
HSL	hsl(222, 71%, 56%)
HSV	hsv(222, 72%, 87%)
CMYK	cmyk(71.6%, 50%, 0%, 12.9%)
CIE-LAB	lab(49.13, 21.14, -61.47)
CIE-LCH	lch(49.13, 65.01, 288.98°)
OKLab	oklab(56.88% -0.0186 -0.1766)
OKLCH	oklch(56.88% 0.178 264)
XYZ	xyz(20.9145, 17.6973, 71.4068)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FDE #DEAE3F

analogous

#3FBEDE #3F6FDE #5E3FDE

triadic

#3F6FDE #DE3F6F #6FDE3F

tetradic

#3F6FDE #DE3FBE #DEAE3F #3FDE5E

square

#3F6FDE #DE3FBE #DEAE3F #3FDE5E

split-complementary

#3F6FDE #DE5E3F #BEDE3F

monochromatic

#183B8B #2151BF #3F6FDE #7396E7 #A7BDF0

Accessibility & contrast

On white

4.63

#3F6FDE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3F6FDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FDE

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FDE	#FFFFFF	#000000	##FFFFFF
##3F6FDE	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C7CE2

Deuteranopia (green-blind)

#006EDC

Tritanopia (blue-blind)

#00899C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3f6fde;
/* rgb */ color: rgb(63, 111, 222);
/* oklch */ color: oklch(56.9% 0.178 264.0);

Tailwind

colors: {
  custom: {
    50: '#8797e9',
    500: '#3f6fde',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fde;
$custom-light: #8797e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fde",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 222
  },
  "hsl": {
    "h": 221.887,
    "s": 70.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.56881,
    "c": 0.17762,
    "h": 264
  },
  "luminance": 0.177
}

Semantic roles & 50–950 ramp

primary

#3F6FDE

secondary

#DDC99B

accent

#B73AED

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #3F6FDE

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

Preview Lab → · Contrast checker → · Palette generator →