#3F3FD8#3F3FD8

#3F3FD8 is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.8% C 0.225 H 273.8°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FD8
RGB	rgb(63, 63, 216)
HSL	hsl(240, 66%, 55%)
HSV	hsv(240, 71%, 85%)
CMYK	cmyk(70.8%, 70.8%, 0%, 15.3%)
CIE-LAB	lab(37.06, 48.64, -77.74)
CIE-LCH	lch(37.06, 91.70, 302.03°)
OKLab	oklab(47.79% 0.015 -0.2248)
OKLCH	oklch(47.79% 0.225 273.8)
XYZ	xyz(16.2179, 9.5681, 65.9446)
Luminance	0.0957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FD8 #D8D83F

analogous

#3F8CD8 #3F3FD8 #8C3FD8

triadic

#3F3FD8 #D83F3F #3FD83F

tetradic

#3F3FD8 #D83F8C #D8D83F #3FD88C

square

#3F3FD8 #D83F8C #D8D83F #3FD88C

split-complementary

#3F3FD8 #D88C3F #8CD83F

monochromatic

#1A1A82 #2525B5 #3F3FD8 #7272E2 #A5A5ED

Accessibility & contrast

On white

7.21

#3F3FD8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#3F3FD8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FD8

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FD8	#FFFFFF	#000000	##FFFFFF
##3F3FD8	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EDD

Deuteranopia (green-blind)

#0050D5

Tritanopia (blue-blind)

#006A87

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f3fd8;
/* rgb */ color: rgb(63, 63, 216);
/* oklch */ color: oklch(47.8% 0.225 273.8);

Tailwind

colors: {
  custom: {
    50: '#8975e5',
    500: '#3f3fd8',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fd8;
$custom-light: #8975e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fd8",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 216
  },
  "hsl": {
    "h": 240,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.47787,
    "c": 0.22531,
    "h": 273.8
  },
  "luminance": 0.0957
}

Semantic roles & 50–950 ramp

primary

#3F3FD8

secondary

#DADA99

accent

#E93FE9

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3F3FD8

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

Preview Lab → · Contrast checker → · Palette generator →