#3F5FD5#3F5FD5

#3F5FD5 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.0% C 0.185 H 268.0°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FD5
RGB	rgb(63, 95, 213)
HSL	hsl(227, 64%, 54%)
HSV	hsv(227, 70%, 84%)
CMYK	cmyk(70.4%, 55.4%, 0%, 16.5%)
CIE-LAB	lab(44.30, 28.02, -64.18)
CIE-LCH	lch(44.30, 70.03, 293.59°)
OKLab	oklab(53.03% -0.0064 -0.1849)
OKLCH	oklch(53.03% 0.185 268)
XYZ	xyz(18.1482, 14.0434, 64.6921)
Luminance	0.1404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FD5 #D5B53F

analogous

#3FAAD5 #3F5FD5 #6A3FD5

triadic

#3F5FD5 #D53F5F #5FD53F

tetradic

#3F5FD5 #D53FAA #D5B53F #3FD56A

square

#3F5FD5 #D53FAA #D5B53F #3FD56A

split-complementary

#3F5FD5 #D56A3F #AAD53F

monochromatic

#1C317E #2744B0 #3F5FD5 #7189E0 #A3B3EB

Accessibility & contrast

On white

5.51

#3F5FD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3F5FD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FD5

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FD5	#FFFFFF	#000000	##FFFFFF
##3F5FD5	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D9

Deuteranopia (green-blind)

#0062D3

Tritanopia (blue-blind)

#007C91

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f5fd5;
/* rgb */ color: rgb(63, 95, 213);
/* oklch */ color: oklch(53.0% 0.185 268.0);

Tailwind

colors: {
  custom: {
    50: '#868ce3',
    500: '#3f5fd5',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fd5;
$custom-light: #868ce3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fd5",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 213
  },
  "hsl": {
    "h": 227.2,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.53028,
    "c": 0.18497,
    "h": 268
  },
  "luminance": 0.14045
}

Semantic roles & 50–950 ramp

primary

#3F5FD5

secondary

#D8CA98

accent

#C441E7

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C15

muted

#7E7D84

Preview Lab

Preview with #3F5FD5

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

Preview Lab → · Contrast checker → · Palette generator →