#3F4FD3#3F4FD3

#3F4FD3 is a mid, highly saturated blue. Relative luminance 0.114; OKLCH L 49.9% C 0.202 H 271.6°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FD3
RGB	rgb(63, 79, 211)
HSL	hsl(234, 63%, 54%)
HSV	hsv(234, 70%, 83%)
CMYK	cmyk(70.1%, 62.6%, 0%, 17.3%)
CIE-LAB	lab(40.16, 37.40, -69.76)
CIE-LCH	lch(40.16, 79.15, 298.19°)
OKLab	oklab(49.91% 0.0055 -0.2014)
OKLCH	oklch(49.91% 0.202 271.6)
XYZ	xyz(16.5998, 11.3502, 62.9314)
Luminance	0.1135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FD3 #D3C33F

analogous

#3F99D3 #3F4FD3 #793FD3

triadic

#3F4FD3 #D33F4F #4FD33F

tetradic

#3F4FD3 #D33F99 #D3C33F #3FD379

square

#3F4FD3 #D33F99 #D3C33F #3FD379

split-complementary

#3F4FD3 #D3793F #99D33F

monochromatic

#1C277B #2836AD #3F4FD3 #717DDE #A3AAEA

Accessibility & contrast

On white

6.42

#3F4FD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3F4FD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FD3

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FD3	#FFFFFF	#000000	##FFFFFF
##3F4FD3	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D7

Deuteranopia (green-blind)

#0058D0

Tritanopia (blue-blind)

#00718A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f4fd3;
/* rgb */ color: rgb(63, 79, 211);
/* oklch */ color: oklch(49.9% 0.202 271.6);

Tailwind

colors: {
  custom: {
    50: '#8780e2',
    500: '#3f4fd3',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fd3;
$custom-light: #8780e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fd3",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 211
  },
  "hsl": {
    "h": 233.514,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.49908,
    "c": 0.20151,
    "h": 271.6
  },
  "luminance": 0.11352
}

Semantic roles & 50–950 ramp

primary

#3F4FD3

secondary

#D7D097

accent

#D442E6

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0A15

muted

#7E7C84

Preview Lab

Preview with #3F4FD3

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

Preview Lab → · Contrast checker → · Palette generator →