#3F3FBE#3F3FBE

#3F3FBE is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.3% C 0.193 H 275.5°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FBE
RGB	rgb(63, 63, 190)
HSL	hsl(240, 50%, 50%)
HSV	hsv(240, 67%, 75%)
CMYK	cmyk(66.8%, 66.8%, 0%, 25.5%)
CIE-LAB	lab(34.66, 40.05, -66.57)
CIE-LCH	lch(34.66, 77.69, 301.03°)
OKLab	oklab(45.33% 0.0184 -0.1922)
OKLCH	oklch(45.33% 0.193 275.5)
XYZ	xyz(13.1186, 8.3283, 49.6214)
Luminance	0.0833 (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

#3F3FBE #BEBE3F

analogous

#3F7FBE #3F3FBE #7F3FBE

triadic

#3F3FBE #BE3F3F #3FBE3F

tetradic

#3F3FBE #BE3F7F #BEBE3F #3FBE7F

square

#3F3FBE #BE3F7F #BEBE3F #3FBE7F

split-complementary

#3F3FBE #BE7F3F #7FBE3F

monochromatic

#212162 #303090 #3F3FBE #6C6CCE #9A9ADD

Accessibility & contrast

On white

7.88

#3F3FBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3F3FBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FBE

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FBE	#FFFFFF	#000000	##FFFFFF
##3F3FBE	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C2

Deuteranopia (green-blind)

#004CBC

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f3fbe;
/* rgb */ color: rgb(63, 63, 190);
/* oklch */ color: oklch(45.3% 0.193 275.5);

Tailwind

colors: {
  custom: {
    50: '#8475d3',
    500: '#3f3fbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fbe;
$custom-light: #8475d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fbe",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 190
  },
  "hsl": {
    "h": 240,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45332,
    "c": 0.19305,
    "h": 275.5
  },
  "luminance": 0.08329
}

Semantic roles & 50–950 ramp

primary

#3F3FBE

secondary

#C9C98F

accent

#DA4EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FBE

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

Preview Lab → · Contrast checker → · Palette generator →