#3F3BBB#3F3BBB

#3F3BBB is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.4% C 0.194 H 276.4°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BBB
RGB	rgb(63, 59, 187)
HSL	hsl(242, 52%, 48%)
HSV	hsv(242, 68%, 73%)
CMYK	cmyk(66.3%, 68.4%, 0%, 26.7%)
CIE-LAB	lab(33.50, 41.44, -66.70)
CIE-LCH	lch(33.50, 78.52, 301.85°)
OKLab	oklab(44.41% 0.0216 -0.1925)
OKLCH	oklch(44.41% 0.194 276.4)
XYZ	xyz(12.5806, 7.7715, 47.8411)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.80

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BBB #B7BB3B

analogous

#3B77BB #3F3BBB #7F3BBB

triadic

#3F3BBB #BB3F3B #3BBB3F

tetradic

#3F3BBB #BB3B77 #B7BB3B #3BBB7F

square

#3F3BBB #BB3B77 #B7BB3B #3BBB7F

split-complementary

#3F3BBB #BB7F3B #77BB3B

monochromatic

#201E5E #2F2C8C #3F3BBB #6865CE #9693DD

Accessibility & contrast

On white

8.22

#3F3BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3F3BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BBB

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BBB	#FFFFFF	#000000	##FFFFFF
##3F3BBB	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3bbb;
/* rgb */ color: rgb(63, 59, 187);
/* oklch */ color: oklch(44.4% 0.194 276.4);

Tailwind

colors: {
  custom: {
    50: '#8472d1',
    500: '#3f3bbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bbb;
$custom-light: #8472d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bbb",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 187
  },
  "hsl": {
    "h": 241.875,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44414,
    "c": 0.19376,
    "h": 276.4
  },
  "luminance": 0.07773
}

Semantic roles & 50–950 ramp

primary

#3F3BBB

secondary

#C6C88A

accent

#DB4CD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3BBB

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

Preview Lab → · Contrast checker → · Palette generator →