#3F3BB3#3F3BB3

#3F3BB3 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.7% C 0.184 H 277.1°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB3
RGB	rgb(63, 59, 179)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 67%, 70%)
CMYK	cmyk(64.8%, 67%, 0%, 29.8%)
CIE-LAB	lab(32.78, 38.78, -63.14)
CIE-LCH	lch(32.78, 74.10, 301.56°)
OKLab	oklab(43.68% 0.0227 -0.1821)
OKLCH	oklch(43.68% 0.184 277.1)
XYZ	xyz(11.7479, 7.4384, 43.4557)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BB3 #AFB33B

analogous

#3B73B3 #3F3BB3 #7B3BB3

triadic

#3F3BB3 #B33F3B #3BB33F

tetradic

#3F3BB3 #B33B73 #AFB33B #3BB37B

square

#3F3BB3 #B33B73 #AFB33B #3BB37B

split-complementary

#3F3BB3 #B37B3B #73B33B

monochromatic

#1F1D57 #2F2C85 #3F3BB3 #6460CB #918EDA

Accessibility & contrast

On white

8.44

#3F3BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3F3BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB3

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB3	#FFFFFF	#000000	##FFFFFF
##3F3BB3	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3bb3;
/* rgb */ color: rgb(63, 59, 179);
/* oklch */ color: oklch(43.7% 0.184 277.1);

Tailwind

colors: {
  custom: {
    50: '#8272cb',
    500: '#3f3bb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb3;
$custom-light: #8272cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb3",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 179
  },
  "hsl": {
    "h": 242,
    "s": 50.42,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43676,
    "c": 0.18353,
    "h": 277.1
  },
  "luminance": 0.07439
}

Semantic roles & 50–950 ramp

primary

#3F3BB3

secondary

#C3C585

accent

#DA4ED5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3BB3

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

Preview Lab → · Contrast checker → · Palette generator →