#3F6CD5#3F6CD5

#3F6CD5 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.6% C 0.169 H 264.2°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CD5
RGB	rgb(63, 108, 213)
HSL	hsl(222, 64%, 54%)
HSV	hsv(222, 70%, 84%)
CMYK	cmyk(70.4%, 49.3%, 0%, 16.5%)
CIE-LAB	lab(47.73, 19.78, -58.62)
CIE-LCH	lch(47.73, 61.87, 288.65°)
OKLab	oklab(55.63% -0.0171 -0.1683)
OKLCH	oklch(55.63% 0.169 264.2)
XYZ	xyz(19.4185, 16.5840, 65.1155)
Luminance	0.1659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CD5 #D5A83F

analogous

#3FB7D5 #3F6CD5 #5D3FD5

triadic

#3F6CD5 #D53F6C #6CD53F

tetradic

#3F6CD5 #D53FB7 #D5A83F #3FD55D

square

#3F6CD5 #D53FB7 #D5A83F #3FD55D

split-complementary

#3F6CD5 #D55D3F #B7D53F

monochromatic

#1C397E #2750B0 #3F6CD5 #7192E0 #A3B9EB

Accessibility & contrast

On white

4.86

#3F6CD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3F6CD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CD5

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CD5	#FFFFFF	#000000	##FFFFFF
##3F6CD5	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3079D9

Deuteranopia (green-blind)

#006BD3

Tritanopia (blue-blind)

#008596

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6cd5;
/* rgb */ color: rgb(63, 108, 213);
/* oklch */ color: oklch(55.6% 0.169 264.2);

Tailwind

colors: {
  custom: {
    50: '#8695e3',
    500: '#3f6cd5',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cd5;
$custom-light: #8695e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cd5",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 213
  },
  "hsl": {
    "h": 222,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.55629,
    "c": 0.16917,
    "h": 264.2
  },
  "luminance": 0.16586
}

Semantic roles & 50–950 ramp

primary

#3F6CD5

secondary

#D8C598

accent

#B541E7

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6CD5

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

Preview Lab → · Contrast checker → · Palette generator →