#3F3FA5#3F3FA5

#3F3FA5 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.160 H 277.3°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FA5
RGB	rgb(63, 63, 165)
HSL	hsl(240, 45%, 45%)
HSV	hsv(240, 62%, 65%)
CMYK	cmyk(61.8%, 61.8%, 0%, 35.3%)
CIE-LAB	lab(32.54, 31.57, -55.17)
CIE-LCH	lch(32.54, 63.56, 299.78°)
OKLab	oklab(43.13% 0.0204 -0.1587)
OKLCH	oklch(43.13% 0.16 277.3)
XYZ	xyz(10.6167, 7.3276, 36.4449)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.83

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FA5 #A5A53F

analogous

#3F72A5 #3F3FA5 #723FA5

triadic

#3F3FA5 #A53F3F #3FA53F

tetradic

#3F3FA5 #A53F72 #A5A53F #3FA572

square

#3F3FA5 #A53F72 #A5A53F #3FA572

split-complementary

#3F3FA5 #A5723F #72A53F

monochromatic

#1D1D4C #2E2E79 #3F3FA5 #5F5FC2 #8C8CD3

Accessibility & contrast

On white

8.52

#3F3FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3F3FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FA5

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FA5	#FFFFFF	#000000	##FFFFFF
##3F3FA5	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A8

Deuteranopia (green-blind)

#0048A3

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3fa5;
/* rgb */ color: rgb(63, 63, 165);
/* oklch */ color: oklch(43.1% 0.160 277.3);

Tailwind

colors: {
  custom: {
    50: '#7f74c0',
    500: '#3f3fa5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fa5;
$custom-light: #7f74c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fa5",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 165
  },
  "hsl": {
    "h": 240,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43132,
    "c": 0.16004,
    "h": 277.3
  },
  "luminance": 0.07328
}

Semantic roles & 50–950 ramp

primary

#3F3FA5

secondary

#BEBE82

accent

#D453D4

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3FA5

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

Preview Lab → · Contrast checker → · Palette generator →