#3F6DD8#3F6DD8

#3F6DD8 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.0% C 0.172 H 264.1°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DD8
RGB	rgb(63, 109, 216)
HSL	hsl(222, 66%, 55%)
HSV	hsv(222, 71%, 85%)
CMYK	cmyk(70.8%, 49.5%, 0%, 15.3%)
CIE-LAB	lab(48.20, 20.23, -59.58)
CIE-LCH	lch(48.20, 62.92, 288.76°)
OKLab	oklab(56.05% -0.0176 -0.1711)
OKLCH	oklch(56.05% 0.172 264.1)
XYZ	xyz(19.9088, 16.9498, 67.1748)
Luminance	0.1695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DD8 #D8AA3F

analogous

#3FB9D8 #3F6DD8 #5E3FD8

triadic

#3F6DD8 #D83F6D #6DD83F

tetradic

#3F6DD8 #D83FB9 #D8AA3F #3FD85E

square

#3F6DD8 #D83FB9 #D8AA3F #3FD85E

split-complementary

#3F6DD8 #D85E3F #B9D83F

monochromatic

#1A3A82 #2550B5 #3F6DD8 #7294E2 #A5BAED

Accessibility & contrast

On white

4.78

#3F6DD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3F6DD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DD8

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DD8	#FFFFFF	#000000	##FFFFFF
##3F6DD8	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E7ADC

Deuteranopia (green-blind)

#006CD6

Tritanopia (blue-blind)

#008698

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6dd8;
/* rgb */ color: rgb(63, 109, 216);
/* oklch */ color: oklch(56.0% 0.172 264.1);

Tailwind

colors: {
  custom: {
    50: '#8696e5',
    500: '#3f6dd8',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dd8;
$custom-light: #8696e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dd8",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 216
  },
  "hsl": {
    "h": 221.961,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.56046,
    "c": 0.172,
    "h": 264.1
  },
  "luminance": 0.16952
}

Semantic roles & 50–950 ramp

primary

#3F6DD8

secondary

#DAC699

accent

#B63FE9

background

#F8F9FE

surface

#F0F1FC

border

#CBCBD5

text

#0D0D16

muted

#7D7E84

Preview Lab

Preview with #3F6DD8

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

Preview Lab → · Contrast checker → · Palette generator →