#3F39AE#3F39AE

#3F39AE is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.179 H 277.9°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F39AE
RGB	rgb(63, 57, 174)
HSL	hsl(243, 51%, 45%)
HSV	hsv(243, 67%, 68%)
CMYK	cmyk(63.8%, 67.2%, 0%, 31.8%)
CIE-LAB	lab(31.89, 38.33, -61.62)
CIE-LCH	lch(31.89, 72.57, 301.88°)
OKLab	oklab(42.9% 0.0248 -0.1777)
OKLCH	oklch(42.9% 0.179 277.9)
XYZ	xyz(11.1505, 7.0381, 40.8071)
Luminance	0.0704 (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

#3F39AE #A8AE39

analogous

#396DAE #3F39AE #7939AE

triadic

#3F39AE #AE3F39 #39AE3F

tetradic

#3F39AE #AE396D #A8AE39 #39AE79

square

#3F39AE #AE396D #A8AE39 #39AE79

split-complementary

#3F39AE #AE7939 #6DAE39

monochromatic

#1E1B52 #2E2A80 #3F39AE #615BC9 #8D89D8

Accessibility & contrast

On white

8.72

#3F39AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3F39AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39AE

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39AE	#FFFFFF	#000000	##FFFFFF
##3F39AE	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0046AC

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f39ae;
/* rgb */ color: rgb(63, 57, 174);
/* oklch */ color: oklch(42.9% 0.179 277.9);

Tailwind

colors: {
  custom: {
    50: '#8170c7',
    500: '#3f39ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f39ae;
$custom-light: #8170c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39ae",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 174
  },
  "hsl": {
    "h": 243.077,
    "s": 50.649,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42895,
    "c": 0.1794,
    "h": 277.9
  },
  "luminance": 0.07039
}

Semantic roles & 50–950 ramp

primary

#3F39AE

secondary

#BFC380

accent

#DA4ED3

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F39AE

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

Preview Lab → · Contrast checker → · Palette generator →