#3F3CB4#3F3CB4

#3F3CB4 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.184 H 276.8°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CB4
RGB	rgb(63, 60, 180)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 67%, 71%)
CMYK	cmyk(65%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(33.10, 38.51, -63.22)
CIE-LCH	lch(33.10, 74.03, 301.35°)
OKLab	oklab(43.93% 0.0218 -0.1824)
OKLCH	oklch(43.93% 0.184 276.8)
XYZ	xyz(11.9013, 7.5828, 44.0076)
Luminance	0.0758 (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

#3F3CB4 #B1B43C

analogous

#3C75B4 #3F3CB4 #7B3CB4

triadic

#3F3CB4 #B43F3C #3CB43F

tetradic

#3F3CB4 #B43C75 #B1B43C #3CB47B

square

#3F3CB4 #B43C75 #B1B43C #3CB47B

split-complementary

#3F3CB4 #B47B3C #75B43C

monochromatic

#1F1D58 #2F2D86 #3F3CB4 #6562CB #9290DA

Accessibility & contrast

On white

8.34

#3F3CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3F3CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CB4

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CB4	#FFFFFF	#000000	##FFFFFF
##3F3CB4	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3cb4;
/* rgb */ color: rgb(63, 60, 180);
/* oklch */ color: oklch(43.9% 0.184 276.8);

Tailwind

colors: {
  custom: {
    50: '#8272cb',
    500: '#3f3cb4',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cb4;
$custom-light: #8272cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cb4",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 241.5,
    "s": 50,
    "l": 47.059
  },
  "oklch": {
    "l": 0.4393,
    "c": 0.18365,
    "h": 276.8
  },
  "luminance": 0.07584
}

Semantic roles & 50–950 ramp

primary

#3F3CB4

secondary

#C4C587

accent

#DA4ED6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3CB4

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

Preview Lab → · Contrast checker → · Palette generator →