#3F6ED4#3F6ED4

#3F6ED4 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.0% C 0.165 H 263.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ED4
RGB	rgb(63, 110, 212)
HSL	hsl(221, 63%, 54%)
HSV	hsv(221, 70%, 83%)
CMYK	cmyk(70.3%, 48.1%, 0%, 16.9%)
CIE-LAB	lab(48.21, 18.16, -57.28)
CIE-LCH	lch(48.21, 60.09, 287.59°)
OKLab	oklab(55.97% -0.019 -0.1643)
OKLCH	oklch(55.97% 0.165 263.4)
XYZ	xyz(19.5053, 16.9601, 64.5202)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ED4 #D4A53F

analogous

#3FB9D4 #3F6ED4 #5B3FD4

triadic

#3F6ED4 #D43F6E #6ED43F

tetradic

#3F6ED4 #D43FB9 #D4A53F #3FD45B

square

#3F6ED4 #D43FB9 #D4A53F #3FD45B

split-complementary

#3F6ED4 #D45B3F #B9D43F

monochromatic

#1C3A7D #2752AF #3F6ED4 #7194DF #A3BAEA

Accessibility & contrast

On white

4.78

#3F6ED4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3F6ED4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ED4

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ED4	#FFFFFF	#000000	##FFFFFF
##3F6ED4	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)

#367AD8

Deuteranopia (green-blind)

#086CD2

Tritanopia (blue-blind)

#008697

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6ed4;
/* rgb */ color: rgb(63, 110, 212);
/* oklch */ color: oklch(56.0% 0.165 263.4);

Tailwind

colors: {
  custom: {
    50: '#8597e2',
    500: '#3f6ed4',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ed4;
$custom-light: #8597e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ed4",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 212
  },
  "hsl": {
    "h": 221.074,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.55974,
    "c": 0.16542,
    "h": 263.4
  },
  "luminance": 0.16962
}

Semantic roles & 50–950 ramp

primary

#3F6ED4

secondary

#D7C398

accent

#B241E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6ED4

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

Preview Lab → · Contrast checker → · Palette generator →