#3F5ED3#3F5ED3

#3F5ED3 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.7% C 0.184 H 268.2°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ED3
RGB	rgb(63, 94, 211)
HSL	hsl(227, 63%, 54%)
HSV	hsv(227, 70%, 83%)
CMYK	cmyk(70.1%, 55.5%, 0%, 17.3%)
CIE-LAB	lab(43.89, 27.94, -63.69)
CIE-LCH	lch(43.89, 69.55, 293.69°)
OKLab	oklab(52.68% -0.0057 -0.1834)
OKLCH	oklch(52.68% 0.184 268.2)
XYZ	xyz(17.8064, 13.7635, 63.3336)
Luminance	0.1376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ED3 #D3B43F

analogous

#3FA8D3 #3F5ED3 #6A3FD3

triadic

#3F5ED3 #D33F5E #5ED33F

tetradic

#3F5ED3 #D33FA8 #D3B43F #3FD36A

square

#3F5ED3 #D33FA8 #D3B43F #3FD36A

split-complementary

#3F5ED3 #D36A3F #A8D33F

monochromatic

#1C307B #2844AD #3F5ED3 #7188DE #A3B2EA

Accessibility & contrast

On white

5.60

#3F5ED3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3F5ED3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ED3

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ED3	#FFFFFF	#000000	##FFFFFF
##3F5ED3	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD7

Deuteranopia (green-blind)

#0061D1

Tritanopia (blue-blind)

#007B8F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f5ed3;
/* rgb */ color: rgb(63, 94, 211);
/* oklch */ color: oklch(52.7% 0.184 268.2);

Tailwind

colors: {
  custom: {
    50: '#868be1',
    500: '#3f5ed3',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ed3;
$custom-light: #868be1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ed3",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 211
  },
  "hsl": {
    "h": 227.432,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.52679,
    "c": 0.18352,
    "h": 268.2
  },
  "luminance": 0.13765
}

Semantic roles & 50–950 ramp

primary

#3F5ED3

secondary

#D7C997

accent

#C342E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ED3

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

Preview Lab → · Contrast checker → · Palette generator →