#3F3FA6#3F3FA6

#3F3FA6 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.161 H 277.3°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FA6
RGB	rgb(63, 63, 166)
HSL	hsl(240, 45%, 45%)
HSV	hsv(240, 62%, 65%)
CMYK	cmyk(62%, 62%, 0%, 34.9%)
CIE-LAB	lab(32.62, 31.91, -55.64)
CIE-LCH	lch(32.62, 64.14, 299.83°)
OKLab	oklab(43.22% 0.0204 -0.1601)
OKLCH	oklch(43.22% 0.161 277.3)
XYZ	xyz(10.7081, 7.3641, 36.9261)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FA6 #A6A63F

analogous

#3F73A6 #3F3FA6 #733FA6

triadic

#3F3FA6 #A63F3F #3FA63F

tetradic

#3F3FA6 #A63F73 #A6A63F #3FA673

square

#3F3FA6 #A63F73 #A6A63F #3FA673

split-complementary

#3F3FA6 #A6733F #73A63F

monochromatic

#1D1D4D #2E2E7A #3F3FA6 #6060C3 #8C8CD3

Accessibility & contrast

On white

8.49

#3F3FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3F3FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FA6

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FA6	#FFFFFF	#000000	##FFFFFF
##3F3FA6	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A9

Deuteranopia (green-blind)

#0048A4

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3fa6;
/* rgb */ color: rgb(63, 63, 166);
/* oklch */ color: oklch(43.2% 0.161 277.3);

Tailwind

colors: {
  custom: {
    50: '#7f74c1',
    500: '#3f3fa6',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fa6;
$custom-light: #7f74c1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fa6",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 166
  },
  "hsl": {
    "h": 240,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43216,
    "c": 0.1614,
    "h": 277.3
  },
  "luminance": 0.07365
}

Semantic roles & 50–950 ramp

primary

#3F3FA6

secondary

#BEBE83

accent

#D553D5

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3FA6

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

Preview Lab → · Contrast checker → · Palette generator →