#3F5DCD#3F5DCD

#3F5DCD is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.0% C 0.177 H 268.3°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F5DCD
RGB	rgb(63, 93, 205)
HSL	hsl(227, 59%, 53%)
HSV	hsv(227, 69%, 80%)
CMYK	cmyk(69.3%, 54.6%, 0%, 19.6%)
CIE-LAB	lab(43.20, 26.43, -61.37)
CIE-LCH	lch(43.20, 66.82, 293.30°)
OKLab	oklab(52.02% -0.0052 -0.1766)
OKLCH	oklch(52.02% 0.177 268.3)
XYZ	xyz(16.9799, 13.2916, 59.4164)
Luminance	0.1329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5DCD #CDAF3F

analogous

#3FA4CD #3F5DCD #683FCD

triadic

#3F5DCD #CD3F5D #5DCD3F

tetradic

#3F5DCD #CD3FA4 #CDAF3F #3FCD68

square

#3F5DCD #CD3FA4 #CDAF3F #3FCD68

split-complementary

#3F5DCD #CD683F #A4CD3F

monochromatic

#1E3074 #2B44A4 #3F5DCD #7086DA #A0AFE6

Accessibility & contrast

On white

5.74

#3F5DCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3F5DCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5DCD

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5DCD	#FFFFFF	#000000	##FFFFFF
##3F5DCD	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD1

Deuteranopia (green-blind)

#0060CB

Tritanopia (blue-blind)

#00788C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5dcd;
/* rgb */ color: rgb(63, 93, 205);
/* oklch */ color: oklch(52.0% 0.177 268.3);

Tailwind

colors: {
  custom: {
    50: '#858add',
    500: '#3f5dcd',
    950: '#000000',
  },
}

SCSS

$custom: #3f5dcd;
$custom-light: #858add;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5dcd",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 205
  },
  "hsl": {
    "h": 227.324,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.52022,
    "c": 0.1767,
    "h": 268.3
  },
  "luminance": 0.13293
}

Semantic roles & 50–950 ramp

primary

#3F5DCD

secondary

#D3C695

accent

#C146E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5DCD

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

Preview Lab → · Contrast checker → · Palette generator →