#3F3C9E#3F3C9E

#3F3C9E is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.154 H 278.8°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F3C9E
RGB	rgb(63, 60, 158)
HSL	hsl(242, 45%, 43%)
HSV	hsv(242, 62%, 62%)
CMYK	cmyk(60.1%, 62%, 0%, 38%)
CIE-LAB	lab(31.25, 31.09, -53.06)
CIE-LCH	lch(31.25, 61.50, 300.37°)
OKLab	oklab(42% 0.0236 -0.1525)
OKLCH	oklch(42% 0.154 278.8)
XYZ	xyz(9.8353, 6.7564, 33.1270)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.57

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3C9E #9B9E3C

analogous

#3C6A9E #3F3C9E #703C9E

triadic

#3F3C9E #9E3F3C #3C9E3F

tetradic

#3F3C9E #9E3C6A #9B9E3C #3C9E70

square

#3F3C9E #9E3C6A #9B9E3C #3C9E70

split-complementary

#3F3C9E #9E703C #6A9E3C

monochromatic

#1C1A45 #2D2B72 #3F3C9E #5B58BF #8684D0

Accessibility & contrast

On white

8.93

#3F3C9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#3F3C9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3C9E

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3C9E	#FFFFFF	#000000	##FFFFFF
##3F3C9E	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00469C

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f3c9e;
/* rgb */ color: rgb(63, 60, 158);
/* oklch */ color: oklch(42.0% 0.154 278.8);

Tailwind

colors: {
  custom: {
    50: '#7e72bb',
    500: '#3f3c9e',
    950: '#000000',
  },
}

SCSS

$custom: #3f3c9e;
$custom-light: #7e72bb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3c9e",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 158
  },
  "hsl": {
    "h": 241.837,
    "s": 44.954,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42004,
    "c": 0.15434,
    "h": 278.8
  },
  "luminance": 0.06757
}

Semantic roles & 50–950 ramp

primary

#3F3C9E

secondary

#B8BA7B

accent

#D553D1

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3C9E

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

Preview Lab → · Contrast checker → · Palette generator →