#3F6DD7#3F6DD7

#3F6DD7 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.0% C 0.171 H 264.0°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DD7
RGB	rgb(63, 109, 215)
HSL	hsl(222, 66%, 55%)
HSV	hsv(222, 71%, 84%)
CMYK	cmyk(70.7%, 49.3%, 0%, 15.7%)
CIE-LAB	lab(48.13, 19.87, -59.11)
CIE-LCH	lch(48.13, 62.36, 288.58°)
OKLab	oklab(55.98% -0.0177 -0.1697)
OKLCH	oklch(55.98% 0.171 264)
XYZ	xyz(19.7799, 16.8983, 66.4961)
Luminance	0.1690 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DD7 #D7A93F

analogous

#3FB9D7 #3F6DD7 #5D3FD7

triadic

#3F6DD7 #D73F6D #6DD73F

tetradic

#3F6DD7 #D73FB9 #D7A93F #3FD75D

square

#3F6DD7 #D73FB9 #D7A93F #3FD75D

split-complementary

#3F6DD7 #D75D3F #B9D73F

monochromatic

#1B3A81 #2550B3 #3F6DD7 #7294E2 #A4BAEC

Accessibility & contrast

On white

4.79

#3F6DD7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3F6DD7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DD7

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DD7	#FFFFFF	#000000	##FFFFFF
##3F6DD7	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#307ADB

Deuteranopia (green-blind)

#006CD5

Tritanopia (blue-blind)

#008698

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6dd7;
/* rgb */ color: rgb(63, 109, 215);
/* oklch */ color: oklch(56.0% 0.171 264.0);

Tailwind

colors: {
  custom: {
    50: '#8696e4',
    500: '#3f6dd7',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dd7;
$custom-light: #8696e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dd7",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 215
  },
  "hsl": {
    "h": 221.842,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.55976,
    "c": 0.17066,
    "h": 264
  },
  "luminance": 0.169
}

Semantic roles & 50–950 ramp

primary

#3F6DD7

secondary

#D9C699

accent

#B53FE8

background

#F8F9FE

surface

#F0F1FC

border

#CBCBD5

text

#0D0D16

muted

#7D7E84

Preview Lab

Preview with #3F6DD7

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

Preview Lab → · Contrast checker → · Palette generator →