#3F3BB6#3F3BB6

#3F3BB6 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.187 H 276.8°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB6
RGB	rgb(63, 59, 182)
HSL	hsl(242, 51%, 47%)
HSV	hsv(242, 68%, 71%)
CMYK	cmyk(65.4%, 67.6%, 0%, 28.6%)
CIE-LAB	lab(33.05, 39.78, -64.48)
CIE-LCH	lch(33.05, 75.77, 301.67°)
OKLab	oklab(43.95% 0.0223 -0.1861)
OKLCH	oklch(43.95% 0.187 276.8)
XYZ	xyz(12.0546, 7.5611, 45.0711)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.73

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BB6 #B2B63B

analogous

#3B75B6 #3F3BB6 #7C3BB6

triadic

#3F3BB6 #B63F3B #3BB63F

tetradic

#3F3BB6 #B63B75 #B2B63B #3BB67C

square

#3F3BB6 #B63B75 #B2B63B #3BB67C

split-complementary

#3F3BB6 #B67C3B #75B63B

monochromatic

#1F1D5A #2F2C88 #3F3BB6 #6662CC #9390DB

Accessibility & contrast

On white

8.36

#3F3BB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3F3BB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB6

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB6	#FFFFFF	#000000	##FFFFFF
##3F3BB6	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BA

Deuteranopia (green-blind)

#0048B4

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3bb6;
/* rgb */ color: rgb(63, 59, 182);
/* oklch */ color: oklch(44.0% 0.187 276.8);

Tailwind

colors: {
  custom: {
    50: '#8372cd',
    500: '#3f3bb6',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb6;
$custom-light: #8372cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb6",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 182
  },
  "hsl": {
    "h": 241.951,
    "s": 51.037,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43951,
    "c": 0.18739,
    "h": 276.8
  },
  "luminance": 0.07562
}

Semantic roles & 50–950 ramp

primary

#3F3BB6

secondary

#C4C687

accent

#DB4DD6

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3BB6

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

Preview Lab → · Contrast checker → · Palette generator →