#3F3FCB#3F3FCB

#3F3FCB is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.5% C 0.209 H 274.6°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FCB
RGB	rgb(63, 63, 203)
HSL	hsl(240, 57%, 52%)
HSV	hsv(240, 69%, 80%)
CMYK	cmyk(69%, 69%, 0%, 20.4%)
CIE-LAB	lab(35.83, 44.38, -72.23)
CIE-LCH	lch(35.83, 84.78, 301.56°)
OKLab	oklab(46.54% 0.0168 -0.2087)
OKLCH	oklch(46.54% 0.209 274.6)
XYZ	xyz(14.6033, 8.9222, 57.4409)
Luminance	0.0892 (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

#3F3FCB #CBCB3F

analogous

#3F85CB #3F3FCB #853FCB

triadic

#3F3FCB #CB3F3F #3FCB3F

tetradic

#3F3FCB #CB3F85 #CBCB3F #3FCB85

square

#3F3FCB #CB3F85 #CBCB3F #3FCB85

split-complementary

#3F3FCB #CB853F #85CB3F

monochromatic

#1F1F71 #2C2CA1 #3F3FCB #6F6FD8 #9F9FE5

Accessibility & contrast

On white

7.54

#3F3FCB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#3F3FCB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FCB

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FCB	#FFFFFF	#000000	##FFFFFF
##3F3FCB	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCF

Deuteranopia (green-blind)

#004EC8

Tritanopia (blue-blind)

#006580

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f3fcb;
/* rgb */ color: rgb(63, 63, 203);
/* oklch */ color: oklch(46.5% 0.209 274.6);

Tailwind

colors: {
  custom: {
    50: '#8775dc',
    500: '#3f3fcb',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fcb;
$custom-light: #8775dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fcb",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 203
  },
  "hsl": {
    "h": 240,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.46541,
    "c": 0.20942,
    "h": 274.6
  },
  "luminance": 0.08924
}

Semantic roles & 50–950 ramp

primary

#3F3FCB

secondary

#D1D194

accent

#E147E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F3FCB

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

Preview Lab → · Contrast checker → · Palette generator →