#3F5FE4#3F5FE4

#3F5FE4 is a mid, highly saturated blue. Relative luminance 0.148; OKLCH L 54.2% C 0.205 H 268.3°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FE4
RGB	rgb(63, 95, 228)
HSL	hsl(228, 75%, 57%)
HSV	hsv(228, 72%, 89%)
CMYK	cmyk(72.4%, 58.3%, 0%, 10.6%)
CIE-LAB	lab(45.41, 33.37, -70.89)
CIE-LCH	lch(45.41, 78.35, 295.21°)
OKLab	oklab(54.22% -0.0059 -0.2046)
OKLCH	oklch(54.22% 0.205 268.3)
XYZ	xyz(20.1409, 14.8405, 75.1868)
Luminance	0.1484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FE4 #E4C43F

analogous

#3FB1E4 #3F5FE4 #723FE4

triadic

#3F5FE4 #E43F5F #5FE43F

tetradic

#3F5FE4 #E43FB1 #E4C43F #3FE472

square

#3F5FE4 #E43FB1 #E4C43F #3FE472

split-complementary

#3F5FE4 #E4723F #B1E43F

monochromatic

#152D94 #1C3EC9 #3F5FE4 #758CEC #AAB8F3

Accessibility & contrast

On white

5.29

#3F5FE4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3F5FE4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FE4

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FE4	#FFFFFF	#000000	##FFFFFF
##3F5FE4	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E8

Deuteranopia (green-blind)

#0064E1

Tritanopia (blue-blind)

#008098

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f5fe4;
/* rgb */ color: rgb(63, 95, 228);
/* oklch */ color: oklch(54.2% 0.205 268.3);

Tailwind

colors: {
  custom: {
    50: '#8a8ced',
    500: '#3f5fe4',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fe4;
$custom-light: #8a8ced;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fe4",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 228
  },
  "hsl": {
    "h": 228.364,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.54217,
    "c": 0.20467,
    "h": 268.3
  },
  "luminance": 0.14843
}

Semantic roles & 50–950 ramp

primary

#3F5FE4

secondary

#E1D49E

accent

#CD36F2

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F5FE4

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

Preview Lab → · Contrast checker → · Palette generator →