#3F2FB5#3F2FB5

#3F2FB5 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 42.1% C 0.199 H 278.9°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F2FB5
RGB	rgb(63, 47, 181)
HSL	hsl(247, 59%, 45%)
HSV	hsv(247, 74%, 71%)
CMYK	cmyk(65.2%, 74%, 0%, 29%)
CIE-LAB	lab(30.46, 46.35, -68.15)
CIE-LCH	lch(30.46, 82.41, 304.22°)
OKLab	oklab(42.07% 0.0308 -0.1967)
OKLCH	oklch(42.07% 0.199 278.9)
XYZ	xyz(11.4042, 6.4251, 44.3463)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Indigo Blue

#3A18B1

ΔE00 4.38

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F2FB5 #A5B52F

analogous

#2F62B5 #3F2FB5 #822FB5

triadic

#3F2FB5 #B53F2F #2FB53F

tetradic

#3F2FB5 #B52F62 #A5B52F #2FB582

square

#3F2FB5 #B52F62 #A5B52F #2FB582

split-complementary

#3F2FB5 #B5822F #62B52F

monochromatic

#1D1654 #2E2284 #3F2FB5 #5F50D1 #8C80DE

Accessibility & contrast

On white

9.19

#3F2FB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3F2FB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F2FB5

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F2FB5	#FFFFFF	#000000	##FFFFFF
##3F2FB5	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB9

Deuteranopia (green-blind)

#0042B3

Tritanopia (blue-blind)

#00556F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3f2fb5;
/* rgb */ color: rgb(63, 47, 181);
/* oklch */ color: oklch(42.1% 0.199 278.9);

Tailwind

colors: {
  custom: {
    50: '#846acc',
    500: '#3f2fb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f2fb5;
$custom-light: #846acc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f2fb5",
  "rgb": {
    "r": 63,
    "g": 47,
    "b": 181
  },
  "hsl": {
    "h": 247.164,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42069,
    "c": 0.19913,
    "h": 278.9
  },
  "luminance": 0.06426
}

Semantic roles & 50–950 ramp

primary

#3F2FB5

secondary

#BEC779

accent

#E246CF

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F2FB5

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

Preview Lab → · Contrast checker → · Palette generator →