#3F6BD3#3F6BD3

#3F6BD3 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 55.3% C 0.168 H 264.3°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BD3
RGB	rgb(63, 107, 211)
HSL	hsl(222, 63%, 54%)
HSV	hsv(222, 70%, 83%)
CMYK	cmyk(70.1%, 49.3%, 0%, 17.3%)
CIE-LAB	lab(47.33, 19.69, -58.13)
CIE-LCH	lch(47.33, 61.37, 288.71°)
OKLab	oklab(55.28% -0.0165 -0.1669)
OKLCH	oklch(55.28% 0.168 264.3)
XYZ	xyz(19.0613, 16.2733, 63.7519)
Luminance	0.1628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BD3 #D3A73F

analogous

#3FB5D3 #3F6BD3 #5D3FD3

triadic

#3F6BD3 #D33F6B #6BD33F

tetradic

#3F6BD3 #D33FB5 #D3A73F #3FD35D

square

#3F6BD3 #D33FB5 #D3A73F #3FD35D

split-complementary

#3F6BD3 #D35D3F #B5D33F

monochromatic

#1C397B #284FAD #3F6BD3 #7191DE #A3B8EA

Accessibility & contrast

On white

4.94

#3F6BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3F6BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BD3

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BD3	#FFFFFF	#000000	##FFFFFF
##3F6BD3	1.00	4.94	4.26	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F77D7

Deuteranopia (green-blind)

#006AD1

Tritanopia (blue-blind)

#008495

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6bd3;
/* rgb */ color: rgb(63, 107, 211);
/* oklch */ color: oklch(55.3% 0.168 264.3);

Tailwind

colors: {
  custom: {
    50: '#8594e1',
    500: '#3f6bd3',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bd3;
$custom-light: #8594e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bd3",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 211
  },
  "hsl": {
    "h": 222.162,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.55282,
    "c": 0.16768,
    "h": 264.3
  },
  "luminance": 0.16275
}

Semantic roles & 50–950 ramp

primary

#3F6BD3

secondary

#D7C497

accent

#B542E6

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BD3

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

Preview Lab → · Contrast checker → · Palette generator →