#3F5FD6#3F5FD6

#3F5FD6 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.1% C 0.186 H 268.0°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FD6
RGB	rgb(63, 95, 214)
HSL	hsl(227, 65%, 54%)
HSV	hsv(227, 71%, 84%)
CMYK	cmyk(70.6%, 55.6%, 0%, 16.1%)
CIE-LAB	lab(44.37, 28.38, -64.63)
CIE-LCH	lch(44.37, 70.59, 293.71°)
OKLab	oklab(53.11% -0.0064 -0.1862)
OKLCH	oklch(53.11% 0.186 268)
XYZ	xyz(18.2755, 14.0944, 65.3626)
Luminance	0.1410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FD6 #D6B63F

analogous

#3FAAD6 #3F5FD6 #6B3FD6

triadic

#3F5FD6 #D63F5F #5FD63F

tetradic

#3F5FD6 #D63FAA #D6B63F #3FD66B

square

#3F5FD6 #D63FAA #D6B63F #3FD66B

split-complementary

#3F5FD6 #D66B3F #AAD63F

monochromatic

#1B307F #2644B2 #3F5FD6 #7189E1 #A4B3EC

Accessibility & contrast

On white

5.50

#3F5FD6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3F5FD6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FD6

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FD6	#FFFFFF	#000000	##FFFFFF
##3F5FD6	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DA

Deuteranopia (green-blind)

#0062D4

Tritanopia (blue-blind)

#007C91

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f5fd6;
/* rgb */ color: rgb(63, 95, 214);
/* oklch */ color: oklch(53.1% 0.186 268.0);

Tailwind

colors: {
  custom: {
    50: '#878ce3',
    500: '#3f5fd6',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fd6;
$custom-light: #878ce3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fd6",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 214
  },
  "hsl": {
    "h": 227.285,
    "s": 64.807,
    "l": 54.314
  },
  "oklch": {
    "l": 0.53105,
    "c": 0.1863,
    "h": 268
  },
  "luminance": 0.14096
}

Semantic roles & 50–950 ramp

primary

#3F5FD6

secondary

#D8CB98

accent

#C440E8

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F5FD6

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

Preview Lab → · Contrast checker → · Palette generator →