#3F3FA3#3F3FA3

#3F3FA3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.157 H 277.5°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FA3
RGB	rgb(63, 63, 163)
HSL	hsl(240, 44%, 44%)
HSV	hsv(240, 61%, 64%)
CMYK	cmyk(61.3%, 61.3%, 0%, 36.1%)
CIE-LAB	lab(32.38, 30.89, -54.23)
CIE-LCH	lch(32.38, 62.41, 299.66°)
OKLab	oklab(42.96% 0.0205 -0.156)
OKLCH	oklch(42.96% 0.157 277.5)
XYZ	xyz(10.4361, 7.2553, 35.4937)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.09

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FA3 #A3A33F

analogous

#3F71A3 #3F3FA3 #713FA3

triadic

#3F3FA3 #A33F3F #3FA33F

tetradic

#3F3FA3 #A33F71 #A3A33F #3FA371

square

#3F3FA3 #A33F71 #A3A33F #3FA371

split-complementary

#3F3FA3 #A3713F #71A33F

monochromatic

#1D1D4B #2E2E77 #3F3FA3 #5E5EC1 #8A8AD2

Accessibility & contrast

On white

8.57

#3F3FA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3F3FA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FA3

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FA3	#FFFFFF	#000000	##FFFFFF
##3F3FA3	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A6

Deuteranopia (green-blind)

#0048A1

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f3fa3;
/* rgb */ color: rgb(63, 63, 163);
/* oklch */ color: oklch(43.0% 0.157 277.5);

Tailwind

colors: {
  custom: {
    50: '#7f74bf',
    500: '#3f3fa3',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fa3;
$custom-light: #7f74bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fa3",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 163
  },
  "hsl": {
    "h": 240,
    "s": 44.248,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42964,
    "c": 0.1573,
    "h": 277.5
  },
  "luminance": 0.07256
}

Semantic roles & 50–950 ramp

primary

#3F3FA3

secondary

#BDBD81

accent

#D454D4

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3FA3

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

Preview Lab → · Contrast checker → · Palette generator →