#3F39AC#3F39AC

#3F39AC is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.177 H 278.1°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F39AC
RGB	rgb(63, 57, 172)
HSL	hsl(243, 50%, 45%)
HSV	hsv(243, 67%, 67%)
CMYK	cmyk(63.4%, 66.9%, 0%, 32.5%)
CIE-LAB	lab(31.72, 37.67, -60.71)
CIE-LCH	lch(31.72, 71.45, 301.81°)
OKLab	oklab(42.71% 0.0251 -0.175)
OKLCH	oklch(42.71% 0.177 278.1)
XYZ	xyz(10.9570, 6.9607, 39.7879)
Luminance	0.0696 (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

#3F39AC #A6AC39

analogous

#396DAC #3F39AC #7839AC

triadic

#3F39AC #AC3F39 #39AC3F

tetradic

#3F39AC #AC396D #A6AC39 #39AC78

square

#3F39AC #AC396D #A6AC39 #39AC78

split-complementary

#3F39AC #AC7839 #6DAC39

monochromatic

#1D1B50 #2E2A7E #3F39AC #605AC8 #8C88D8

Accessibility & contrast

On white

8.78

#3F39AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F39AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39AC

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39AC	#FFFFFF	#000000	##FFFFFF
##3F39AC	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0046AA

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f39ac;
/* rgb */ color: rgb(63, 57, 172);
/* oklch */ color: oklch(42.7% 0.177 278.1);

Tailwind

colors: {
  custom: {
    50: '#8170c6',
    500: '#3f39ac',
    950: '#000000',
  },
}

SCSS

$custom: #3f39ac;
$custom-light: #8170c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39ac",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 172
  },
  "hsl": {
    "h": 243.13,
    "s": 50.218,
    "l": 44.902
  },
  "oklch": {
    "l": 0.42713,
    "c": 0.17681,
    "h": 278.1
  },
  "luminance": 0.06962
}

Semantic roles & 50–950 ramp

primary

#3F39AC

secondary

#BEC27F

accent

#DA4ED2

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3F39AC

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

Preview Lab → · Contrast checker → · Palette generator →