#3F4BE0#3F4BE0

#3F4BE0 is a mid, highly saturated blue. Relative luminance 0.115; OKLCH L 50.4% C 0.222 H 271.8°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BE0
RGB	rgb(63, 75, 224)
HSL	hsl(236, 72%, 56%)
HSV	hsv(236, 72%, 88%)
CMYK	cmyk(71.9%, 66.5%, 0%, 12.2%)
CIE-LAB	lab(40.36, 44.29, -76.89)
CIE-LCH	lch(40.36, 88.73, 299.94°)
OKLab	oklab(50.39% 0.0072 -0.2223)
OKLCH	oklch(50.39% 0.222 271.8)
XYZ	xyz(18.0160, 11.4689, 71.7708)
Luminance	0.1147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4BE0 #E0D43F

analogous

#3F9CE0 #3F4BE0 #843FE0

triadic

#3F4BE0 #E03F4B #4BE03F

tetradic

#3F4BE0 #E03F9C #E0D43F #3FE084

square

#3F4BE0 #E03F9C #E0D43F #3FE084

split-complementary

#3F4BE0 #E0843F #9CE03F

monochromatic

#17208E #1F2CC2 #3F4BE0 #747CE9 #A8AEF1

Accessibility & contrast

On white

6.37

#3F4BE0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3F4BE0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4BE0

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BE0	#FFFFFF	#000000	##FFFFFF
##3F4BE0	1.00	6.37	3.29	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067E5

Deuteranopia (green-blind)

#0058DD

Tritanopia (blue-blind)

#00738F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f4be0;
/* rgb */ color: rgb(63, 75, 224);
/* oklch */ color: oklch(50.4% 0.222 271.8);

Tailwind

colors: {
  custom: {
    50: '#8a7eeb',
    500: '#3f4be0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4be0;
$custom-light: #8a7eeb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4be0",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 224
  },
  "hsl": {
    "h": 235.528,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.50393,
    "c": 0.22244,
    "h": 271.8
  },
  "luminance": 0.11471
}

Semantic roles & 50–950 ramp

primary

#3F4BE0

secondary

#DFDA9C

accent

#E139EF

background

#F9F7FE

surface

#F2EEFD

border

#CCC9D5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #3F4BE0

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

Preview Lab → · Contrast checker → · Palette generator →