#3F6AD5#3F6AD5

#3F6AD5 is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.2% C 0.172 H 264.8°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F6AD5
RGB	rgb(63, 106, 213)
HSL	hsl(223, 64%, 54%)
HSV	hsv(223, 70%, 84%)
CMYK	cmyk(70.4%, 50.2%, 0%, 16.5%)
CIE-LAB	lab(47.19, 21.04, -59.49)
CIE-LCH	lch(47.19, 63.10, 289.48°)
OKLab	oklab(55.22% -0.0154 -0.1709)
OKLCH	oklch(55.22% 0.172 264.8)
XYZ	xyz(19.2100, 16.1669, 65.0460)
Luminance	0.1617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6AD5 #D5AA3F

analogous

#3FB5D5 #3F6AD5 #5F3FD5

triadic

#3F6AD5 #D53F6A #6AD53F

tetradic

#3F6AD5 #D53FB5 #D5AA3F #3FD55F

square

#3F6AD5 #D53FB5 #D5AA3F #3FD55F

split-complementary

#3F6AD5 #D55F3F #B5D53F

monochromatic

#1C387E #274EB0 #3F6AD5 #7191E0 #A3B8EB

Accessibility & contrast

On white

4.96

#3F6AD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#3F6AD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6AD5

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6AD5	#FFFFFF	#000000	##FFFFFF
##3F6AD5	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A77D9

Deuteranopia (green-blind)

#0069D3

Tritanopia (blue-blind)

#008395

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6ad5;
/* rgb */ color: rgb(63, 106, 213);
/* oklch */ color: oklch(55.2% 0.172 264.8);

Tailwind

colors: {
  custom: {
    50: '#8694e3',
    500: '#3f6ad5',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ad5;
$custom-light: #8694e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ad5",
  "rgb": {
    "r": 63,
    "g": 106,
    "b": 213
  },
  "hsl": {
    "h": 222.8,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.55219,
    "c": 0.17159,
    "h": 264.8
  },
  "luminance": 0.16169
}

Semantic roles & 50–950 ramp

primary

#3F6AD5

secondary

#D8C698

accent

#B741E7

background

#F8F9FE

surface

#F0F1FC

border

#CBCBD5

text

#0D0D15

muted

#7D7E84

Preview Lab

Preview with #3F6AD5

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

Preview Lab → · Contrast checker → · Palette generator →