#3F5ED7#3F5ED7

#3F5ED7 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.0% C 0.189 H 268.3°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ED7
RGB	rgb(63, 94, 215)
HSL	hsl(228, 66%, 55%)
HSV	hsv(228, 71%, 84%)
CMYK	cmyk(70.7%, 56.3%, 0%, 15.7%)
CIE-LAB	lab(44.19, 29.37, -65.50)
CIE-LCH	lch(44.19, 71.79, 294.15°)
OKLab	oklab(52.99% -0.0056 -0.1888)
OKLCH	oklch(52.99% 0.189 268.3)
XYZ	xyz(18.3141, 13.9666, 66.0074)
Luminance	0.1397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ED7 #D7B83F

analogous

#3FAAD7 #3F5ED7 #6C3FD7

triadic

#3F5ED7 #D73F5E #5ED73F

tetradic

#3F5ED7 #D73FAA #D7B83F #3FD76C

square

#3F5ED7 #D73FAA #D7B83F #3FD76C

split-complementary

#3F5ED7 #D76C3F #AAD73F

monochromatic

#1B3081 #2542B3 #3F5ED7 #7288E2 #A4B3EC

Accessibility & contrast

On white

5.54

#3F5ED7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3F5ED7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ED7

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ED7	#FFFFFF	#000000	##FFFFFF
##3F5ED7	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DB

Deuteranopia (green-blind)

#0062D5

Tritanopia (blue-blind)

#007C91

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f5ed7;
/* rgb */ color: rgb(63, 94, 215);
/* oklch */ color: oklch(53.0% 0.189 268.3);

Tailwind

colors: {
  custom: {
    50: '#878be4',
    500: '#3f5ed7',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ed7;
$custom-light: #878be4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ed7",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 215
  },
  "hsl": {
    "h": 227.763,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.52991,
    "c": 0.18884,
    "h": 268.3
  },
  "luminance": 0.13968
}

Semantic roles & 50–950 ramp

primary

#3F5ED7

secondary

#D9CC99

accent

#C63FE8

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3F5ED7

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

Preview Lab → · Contrast checker → · Palette generator →