#3F3BB5#3F3BB5

#3F3BB5 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.186 H 276.9°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB5
RGB	rgb(63, 59, 181)
HSL	hsl(242, 51%, 47%)
HSV	hsv(242, 67%, 71%)
CMYK	cmyk(65.2%, 67.4%, 0%, 29%)
CIE-LAB	lab(32.96, 39.45, -64.04)
CIE-LCH	lch(32.96, 75.21, 301.64°)
OKLab	oklab(43.86% 0.0224 -0.1847)
OKLCH	oklch(43.86% 0.186 276.9)
XYZ	xyz(11.9516, 7.5199, 44.5288)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BB5 #B1B53B

analogous

#3B74B5 #3F3BB5 #7C3BB5

triadic

#3F3BB5 #B53F3B #3BB53F

tetradic

#3F3BB5 #B53B74 #B1B53B #3BB57C

square

#3F3BB5 #B53B74 #B1B53B #3BB57C

split-complementary

#3F3BB5 #B57C3B #74B53B

monochromatic

#1F1D59 #2F2C87 #3F3BB5 #6562CC #9290DB

Accessibility & contrast

On white

8.39

#3F3BB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3F3BB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB5

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB5	#FFFFFF	#000000	##FFFFFF
##3F3BB5	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B9

Deuteranopia (green-blind)

#0048B3

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3bb5;
/* rgb */ color: rgb(63, 59, 181);
/* oklch */ color: oklch(43.9% 0.186 276.9);

Tailwind

colors: {
  custom: {
    50: '#8372cc',
    500: '#3f3bb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb5;
$custom-light: #8372cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb5",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 181
  },
  "hsl": {
    "h": 241.967,
    "s": 50.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43859,
    "c": 0.1861,
    "h": 276.9
  },
  "luminance": 0.07521
}

Semantic roles & 50–950 ramp

primary

#3F3BB5

secondary

#C4C686

accent

#DA4DD6

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3BB5

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

Preview Lab → · Contrast checker → · Palette generator →