#3F3DBC#3F3DBC

#3F3DBC is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.8% C 0.193 H 276.0°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F3DBC
RGB	rgb(63, 61, 188)
HSL	hsl(241, 51%, 49%)
HSV	hsv(241, 68%, 74%)
CMYK	cmyk(66.5%, 67.6%, 0%, 26.3%)
CIE-LAB	lab(34.03, 40.58, -66.42)
CIE-LCH	lch(34.03, 77.83, 301.42°)
OKLab	oklab(44.83% 0.0201 -0.1917)
OKLCH	oklch(44.83% 0.193 276)
XYZ	xyz(12.7928, 8.0240, 48.4418)
Luminance	0.0803 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.59

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3DBC #BABC3D

analogous

#3D7BBC #3F3DBC #7F3DBC

triadic

#3F3DBC #BC3F3D #3DBC3F

tetradic

#3F3DBC #BC3D7B #BABC3D #3DBC7F

square

#3F3DBC #BC3D7B #BABC3D #3DBC7F

split-complementary

#3F3DBC #BC7F3D #7BBC3D

monochromatic

#201F60 #302E8E #3F3DBC #6A68CE #9796DD

Accessibility & contrast

On white

8.06

#3F3DBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3F3DBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3DBC

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3DBC	#FFFFFF	#000000	##FFFFFF
##3F3DBC	1.00	8.06	2.61	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C0

Deuteranopia (green-blind)

#004ABA

Tritanopia (blue-blind)

#005F77

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f3dbc;
/* rgb */ color: rgb(63, 61, 188);
/* oklch */ color: oklch(44.8% 0.193 276.0);

Tailwind

colors: {
  custom: {
    50: '#8473d1',
    500: '#3f3dbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f3dbc;
$custom-light: #8473d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3dbc",
  "rgb": {
    "r": 63,
    "g": 61,
    "b": 188
  },
  "hsl": {
    "h": 240.945,
    "s": 51.004,
    "l": 48.824
  },
  "oklch": {
    "l": 0.44825,
    "c": 0.19277,
    "h": 276
  },
  "luminance": 0.08025
}

Semantic roles & 50–950 ramp

primary

#3F3DBC

secondary

#C8C98C

accent

#DA4DD8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3DBC

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

Preview Lab → · Contrast checker → · Palette generator →