#3F3FD9#3F3FD9

#3F3FD9 is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.9% C 0.227 H 273.7°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FD9
RGB	rgb(63, 63, 217)
HSL	hsl(240, 67%, 55%)
HSV	hsv(240, 71%, 85%)
CMYK	cmyk(71%, 71%, 0%, 14.9%)
CIE-LAB	lab(37.15, 48.96, -78.16)
CIE-LCH	lch(37.15, 92.23, 302.07°)
OKLab	oklab(47.88% 0.0148 -0.226)
OKLCH	oklch(47.88% 0.227 273.7)
XYZ	xyz(16.3476, 9.6199, 66.6275)
Luminance	0.0962 (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

#3F3FD9 #D9D93F

analogous

#3F8CD9 #3F3FD9 #8C3FD9

triadic

#3F3FD9 #D93F3F #3FD93F

tetradic

#3F3FD9 #D93F8C #D9D93F #3FD98C

square

#3F3FD9 #D93F8C #D9D93F #3FD98C

split-complementary

#3F3FD9 #D98C3F #8CD93F

monochromatic

#1A1A84 #2424B7 #3F3FD9 #7272E3 #A5A5ED

Accessibility & contrast

On white

7.18

#3F3FD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#3F3FD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FD9

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FD9	#FFFFFF	#000000	##FFFFFF
##3F3FD9	1.00	7.18	2.92	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDE

Deuteranopia (green-blind)

#0050D6

Tritanopia (blue-blind)

#006A88

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f3fd9;
/* rgb */ color: rgb(63, 63, 217);
/* oklch */ color: oklch(47.9% 0.227 273.7);

Tailwind

colors: {
  custom: {
    50: '#8a75e6',
    500: '#3f3fd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fd9;
$custom-light: #8a75e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fd9",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 217
  },
  "hsl": {
    "h": 240,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.47884,
    "c": 0.22651,
    "h": 273.7
  },
  "luminance": 0.09622
}

Semantic roles & 50–950 ramp

primary

#3F3FD9

secondary

#DADA9A

accent

#EA3EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #3F3FD9

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

Preview Lab → · Contrast checker → · Palette generator →