#3F3CA4#3F3CA4

#3F3CA4 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.163 H 278.2°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CA4
RGB	rgb(63, 60, 164)
HSL	hsl(242, 46%, 44%)
HSV	hsv(242, 63%, 64%)
CMYK	cmyk(61.6%, 63.4%, 0%, 35.7%)
CIE-LAB	lab(31.73, 33.13, -55.89)
CIE-LCH	lch(31.73, 64.97, 300.66°)
OKLab	oklab(42.51% 0.0232 -0.1608)
OKLCH	oklch(42.51% 0.163 278.2)
XYZ	xyz(10.3644, 6.9680, 35.9136)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.76

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CA4 #A1A43C

analogous

#3C6DA4 #3F3CA4 #733CA4

triadic

#3F3CA4 #A43F3C #3CA43F

tetradic

#3F3CA4 #A43C6D #A1A43C #3CA473

square

#3F3CA4 #A43C6D #A1A43C #3CA473

split-complementary

#3F3CA4 #A4733C #6DA43C

monochromatic

#1D1B4A #2E2C77 #3F3CA4 #5D5AC3 #8987D3

Accessibility & contrast

On white

8.77

#3F3CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F3CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CA4

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CA4	#FFFFFF	#000000	##FFFFFF
##3F3CA4	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA7

Deuteranopia (green-blind)

#0046A2

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f3ca4;
/* rgb */ color: rgb(63, 60, 164);
/* oklch */ color: oklch(42.5% 0.163 278.2);

Tailwind

colors: {
  custom: {
    50: '#7f72c0',
    500: '#3f3ca4',
    950: '#000000',
  },
}

SCSS

$custom: #3f3ca4;
$custom-light: #7f72c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3ca4",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 164
  },
  "hsl": {
    "h": 241.731,
    "s": 46.429,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42514,
    "c": 0.16251,
    "h": 278.2
  },
  "luminance": 0.06969
}

Semantic roles & 50–950 ramp

primary

#3F3CA4

secondary

#BCBD7E

accent

#D652D2

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3CA4

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

Preview Lab → · Contrast checker → · Palette generator →