#3F3DB6#3F3DB6

#3F3DB6 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.185 H 276.4°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F3DB6
RGB	rgb(63, 61, 182)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 66%, 71%)
CMYK	cmyk(65.4%, 66.5%, 0%, 28.6%)
CIE-LAB	lab(33.50, 38.57, -63.75)
CIE-LCH	lch(33.50, 74.51, 301.18°)
OKLab	oklab(44.28% 0.0208 -0.1839)
OKLCH	oklch(44.28% 0.185 276.4)
XYZ	xyz(12.1594, 7.7706, 45.1060)
Luminance	0.0777 (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

#3F3DB6 #B4B63D

analogous

#3D77B6 #3F3DB6 #7C3DB6

triadic

#3F3DB6 #B63F3D #3DB63F

tetradic

#3F3DB6 #B63D77 #B4B63D #3DB67C

square

#3F3DB6 #B63D77 #B4B63D #3DB67C

split-complementary

#3F3DB6 #B67C3D #77B63D

monochromatic

#1F1E5A #2F2E88 #3F3DB6 #6765CB #9493DB

Accessibility & contrast

On white

8.22

#3F3DB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3F3DB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3DB6

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3DB6	#FFFFFF	#000000	##FFFFFF
##3F3DB6	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#0049B4

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3db6;
/* rgb */ color: rgb(63, 61, 182);
/* oklch */ color: oklch(44.3% 0.185 276.4);

Tailwind

colors: {
  custom: {
    50: '#8373cd',
    500: '#3f3db6',
    950: '#000000',
  },
}

SCSS

$custom: #3f3db6;
$custom-light: #8373cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3db6",
  "rgb": {
    "r": 63,
    "g": 61,
    "b": 182
  },
  "hsl": {
    "h": 240.992,
    "s": 49.794,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44276,
    "c": 0.18507,
    "h": 276.4
  },
  "luminance": 0.07772
}

Semantic roles & 50–950 ramp

primary

#3F3DB6

secondary

#C5C689

accent

#D94ED7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3DB6

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

Preview Lab → · Contrast checker → · Palette generator →