#3F3BB8#3F3BB8

#3F3BB8 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.1% C 0.190 H 276.7°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB8
RGB	rgb(63, 59, 184)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 68%, 72%)
CMYK	cmyk(65.8%, 67.9%, 0%, 27.8%)
CIE-LAB	lab(33.23, 40.45, -65.37)
CIE-LCH	lch(33.23, 76.87, 301.75°)
OKLab	oklab(44.14% 0.022 -0.1887)
OKLCH	oklch(44.14% 0.19 276.7)
XYZ	xyz(12.2628, 7.6443, 46.1674)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.74

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BB8 #B4B83B

analogous

#3B75B8 #3F3BB8 #7D3BB8

triadic

#3F3BB8 #B83F3B #3BB83F

tetradic

#3F3BB8 #B83B75 #B4B83B #3BB87D

square

#3F3BB8 #B83B75 #B4B83B #3BB87D

split-complementary

#3F3BB8 #B87D3B #75B83B

monochromatic

#1F1D5B #2F2C8A #3F3BB8 #6763CD #9492DC

Accessibility & contrast

On white

8.30

#3F3BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3F3BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB8

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB8	#FFFFFF	#000000	##FFFFFF
##3F3BB8	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3bb8;
/* rgb */ color: rgb(63, 59, 184);
/* oklch */ color: oklch(44.1% 0.190 276.7);

Tailwind

colors: {
  custom: {
    50: '#8372ce',
    500: '#3f3bb8',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb8;
$custom-light: #8372ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb8",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 184
  },
  "hsl": {
    "h": 241.92,
    "s": 51.44,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44136,
    "c": 0.18995,
    "h": 276.7
  },
  "luminance": 0.07645
}

Semantic roles & 50–950 ramp

primary

#3F3BB8

secondary

#C5C788

accent

#DB4DD6

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3BB8

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

Preview Lab → · Contrast checker → · Palette generator →