#3F3FBF#3F3FBF

#3F3FBF is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.194 H 275.4°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FBF
RGB	rgb(63, 63, 191)
HSL	hsl(240, 50%, 50%)
HSV	hsv(240, 67%, 75%)
CMYK	cmyk(67%, 67%, 0%, 25.1%)
CIE-LAB	lab(34.75, 40.38, -67.01)
CIE-LCH	lch(34.75, 78.24, 301.07°)
OKLab	oklab(45.42% 0.0183 -0.1935)
OKLCH	oklch(45.42% 0.194 275.4)
XYZ	xyz(13.2283, 8.3722, 50.1990)
Luminance	0.0837 (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

#3F3FBF #BFBF3F

analogous

#3F7FBF #3F3FBF #7F3FBF

triadic

#3F3FBF #BF3F3F #3FBF3F

tetradic

#3F3FBF #BF3F7F #BFBF3F #3FBF7F

square

#3F3FBF #BF3F7F #BFBF3F #3FBF7F

split-complementary

#3F3FBF #BF7F3F #7FBF3F

monochromatic

#212163 #303091 #3F3FBF #6D6DCF #9B9BDE

Accessibility & contrast

On white

7.85

#3F3FBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3F3FBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FBF

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FBF	#FFFFFF	#000000	##FFFFFF
##3F3FBF	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C3

Deuteranopia (green-blind)

#004CBD

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f3fbf;
/* rgb */ color: rgb(63, 63, 191);
/* oklch */ color: oklch(45.4% 0.194 275.4);

Tailwind

colors: {
  custom: {
    50: '#8475d3',
    500: '#3f3fbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fbf;
$custom-light: #8475d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fbf",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 191
  },
  "hsl": {
    "h": 240,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45424,
    "c": 0.19432,
    "h": 275.4
  },
  "luminance": 0.08373
}

Semantic roles & 50–950 ramp

primary

#3F3FBF

secondary

#CACA90

accent

#DA4EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FBF

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

Preview Lab → · Contrast checker → · Palette generator →