#3F65E1#3F65E1

#3F65E1 is a mid, vivid blue. Relative luminance 0.158; OKLCH L 55.1% C 0.194 H 266.9°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F65E1
RGB	rgb(63, 101, 225)
HSL	hsl(226, 73%, 56%)
HSV	hsv(226, 72%, 88%)
CMYK	cmyk(72%, 55.1%, 0%, 11.8%)
CIE-LAB	lab(46.71, 28.53, -67.09)
CIE-LCH	lch(46.71, 72.90, 293.04°)
OKLab	oklab(55.12% -0.0104 -0.1933)
OKLCH	oklch(55.12% 0.194 266.9)
XYZ	xyz(20.2894, 15.7982, 73.1996)
Luminance	0.1580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65E1 #E1BB3F

analogous

#3FB6E1 #3F65E1 #6A3FE1

triadic

#3F65E1 #E13F65 #65E13F

tetradic

#3F65E1 #E13FB6 #E1BB3F #3FE16A

square

#3F65E1 #E13FB6 #E1BB3F #3FE16A

split-complementary

#3F65E1 #E16A3F #B6E13F

monochromatic

#16338F #1F45C4 #3F65E1 #748FE9 #A9BAF2

Accessibility & contrast

On white

5.05

#3F65E1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#3F65E1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65E1

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65E1	#FFFFFF	#000000	##FFFFFF
##3F65E1	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E5

Deuteranopia (green-blind)

#0068DF

Tritanopia (blue-blind)

#008399

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f65e1;
/* rgb */ color: rgb(63, 101, 225);
/* oklch */ color: oklch(55.1% 0.194 266.9);

Tailwind

colors: {
  custom: {
    50: '#8990eb',
    500: '#3f65e1',
    950: '#000000',
  },
}

SCSS

$custom: #3f65e1;
$custom-light: #8990eb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65e1",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 225
  },
  "hsl": {
    "h": 225.926,
    "s": 72.973,
    "l": 56.471
  },
  "oklch": {
    "l": 0.55116,
    "c": 0.1936,
    "h": 266.9
  },
  "luminance": 0.158
}

Semantic roles & 50–950 ramp

primary

#3F65E1

secondary

#DFD09D

accent

#C538F0

background

#F9F8FE

surface

#F1F0FD

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F65E1

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

Preview Lab → · Contrast checker → · Palette generator →