#3F6CD8#3F6CD8

#3F6CD8 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.8% C 0.173 H 264.4°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CD8
RGB	rgb(63, 108, 216)
HSL	hsl(222, 66%, 55%)
HSV	hsv(222, 71%, 85%)
CMYK	cmyk(70.8%, 50%, 0%, 15.3%)
CIE-LAB	lab(47.93, 20.86, -60.01)
CIE-LCH	lch(47.93, 63.53, 289.17°)
OKLab	oklab(55.84% -0.0168 -0.1724)
OKLCH	oklch(55.84% 0.173 264.4)
XYZ	xyz(19.8028, 16.7377, 67.1395)
Luminance	0.1674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CD8 #D8AB3F

analogous

#3FB9D8 #3F6CD8 #5F3FD8

triadic

#3F6CD8 #D83F6C #6CD83F

tetradic

#3F6CD8 #D83FB9 #D8AB3F #3FD85F

square

#3F6CD8 #D83FB9 #D8AB3F #3FD85F

split-complementary

#3F6CD8 #D85F3F #B9D83F

monochromatic

#1A3982 #254FB5 #3F6CD8 #7293E2 #A5BAED

Accessibility & contrast

On white

4.83

#3F6CD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3F6CD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CD8

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CD8	#FFFFFF	#000000	##FFFFFF
##3F6CD8	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C79DC

Deuteranopia (green-blind)

#006BD6

Tritanopia (blue-blind)

#008698

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6cd8;
/* rgb */ color: rgb(63, 108, 216);
/* oklch */ color: oklch(55.8% 0.173 264.4);

Tailwind

colors: {
  custom: {
    50: '#8695e5',
    500: '#3f6cd8',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cd8;
$custom-light: #8695e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cd8",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 216
  },
  "hsl": {
    "h": 222.353,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.55842,
    "c": 0.1732,
    "h": 264.4
  },
  "luminance": 0.1674
}

Semantic roles & 50–950 ramp

primary

#3F6CD8

secondary

#DAC799

accent

#B73FE9

background

#F8F9FE

surface

#F0F1FC

border

#CBCBD5

text

#0D0D16

muted

#7D7E84

Preview Lab

Preview with #3F6CD8

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

Preview Lab → · Contrast checker → · Palette generator →