#3F3DB7#3F3DB7

#3F3DB7 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.4% C 0.186 H 276.4°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F3DB7
RGB	rgb(63, 61, 183)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 67%, 72%)
CMYK	cmyk(65.6%, 66.7%, 0%, 28.2%)
CIE-LAB	lab(33.59, 38.91, -64.19)
CIE-LCH	lch(33.59, 75.07, 301.22°)
OKLab	oklab(44.37% 0.0207 -0.1852)
OKLCH	oklch(44.37% 0.186 276.4)
XYZ	xyz(12.2631, 7.8121, 45.6522)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.49

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3DB7 #B5B73D

analogous

#3D78B7 #3F3DB7 #7C3DB7

triadic

#3F3DB7 #B73F3D #3DB73F

tetradic

#3F3DB7 #B73D78 #B5B73D #3DB77C

square

#3F3DB7 #B73D78 #B5B73D #3DB77C

split-complementary

#3F3DB7 #B77C3D #78B73D

monochromatic

#1F1E5B #2F2E89 #3F3DB7 #6765CC #9493DB

Accessibility & contrast

On white

8.19

#3F3DB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3F3DB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3DB7

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3DB7	#FFFFFF	#000000	##FFFFFF
##3F3DB7	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#004AB5

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3db7;
/* rgb */ color: rgb(63, 61, 183);
/* oklch */ color: oklch(44.4% 0.186 276.4);

Tailwind

colors: {
  custom: {
    50: '#8373ce',
    500: '#3f3db7',
    950: '#000000',
  },
}

SCSS

$custom: #3f3db7;
$custom-light: #8373ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3db7",
  "rgb": {
    "r": 63,
    "g": 61,
    "b": 183
  },
  "hsl": {
    "h": 240.984,
    "s": 50,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44367,
    "c": 0.18636,
    "h": 276.4
  },
  "luminance": 0.07813
}

Semantic roles & 50–950 ramp

primary

#3F3DB7

secondary

#C5C689

accent

#DA4ED7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3DB7

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

Preview Lab → · Contrast checker → · Palette generator →