#3F3BB9#3F3BB9

#3F3BB9 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.2% C 0.191 H 276.6°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB9
RGB	rgb(63, 59, 185)
HSL	hsl(242, 52%, 48%)
HSV	hsv(242, 68%, 73%)
CMYK	cmyk(65.9%, 68.1%, 0%, 27.5%)
CIE-LAB	lab(33.32, 40.78, -65.81)
CIE-LCH	lch(33.32, 77.42, 301.78°)
OKLab	oklab(44.23% 0.0219 -0.19)
OKLCH	oklch(44.23% 0.191 276.6)
XYZ	xyz(12.3680, 7.6864, 46.7214)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.75

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BB9 #B5B93B

analogous

#3B76B9 #3F3BB9 #7E3BB9

triadic

#3F3BB9 #B93F3B #3BB93F

tetradic

#3F3BB9 #B93B76 #B5B93B #3BB97E

square

#3F3BB9 #B93B76 #B5B93B #3BB97E

split-complementary

#3F3BB9 #B97E3B #76B93B

monochromatic

#1F1D5C #2F2C8B #3F3BB9 #6764CD #9492DC

Accessibility & contrast

On white

8.28

#3F3BB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3F3BB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB9

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB9	#FFFFFF	#000000	##FFFFFF
##3F3BB9	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BD

Deuteranopia (green-blind)

#0049B7

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3bb9;
/* rgb */ color: rgb(63, 59, 185);
/* oklch */ color: oklch(44.2% 0.191 276.6);

Tailwind

colors: {
  custom: {
    50: '#8372cf',
    500: '#3f3bb9',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb9;
$custom-light: #8372cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb9",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 185
  },
  "hsl": {
    "h": 241.905,
    "s": 51.639,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44228,
    "c": 0.19122,
    "h": 276.6
  },
  "luminance": 0.07687
}

Semantic roles & 50–950 ramp

primary

#3F3BB9

secondary

#C5C788

accent

#DB4DD7

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3BB9

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

Preview Lab → · Contrast checker → · Palette generator →