#3F3C8A#3F3C8A

#3F3C8A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.126 H 280.9°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#3F3C8A
RGB	rgb(63, 60, 138)
HSL	hsl(242, 39%, 39%)
HSV	hsv(242, 57%, 54%)
CMYK	cmyk(54.3%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(29.72, 24.33, -43.29)
CIE-LCH	lch(29.72, 49.66, 299.33°)
OKLab	oklab(40.39% 0.0238 -0.1238)
OKLCH	oklch(40.39% 0.126 280.9)
XYZ	xyz(8.2518, 6.1230, 24.7869)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3C8A #878A3C

analogous

#3C608A #3F3C8A #663C8A

triadic

#3F3C8A #8A3F3C #3C8A3F

tetradic

#3F3C8A #8A3C60 #878A3C #3C8A66

square

#3F3C8A #8A3C60 #878A3C #3C8A66

split-complementary

#3F3C8A #8A663C #608A3C

monochromatic

#181735 #2C295F #3F3C8A #5450B3 #7E7BC6

Accessibility & contrast

On white

9.44

#3F3C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3F3C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3C8A

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3C8A	#FFFFFF	#000000	##FFFFFF
##3F3C8A	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A498D

Deuteranopia (green-blind)

#004388

Tritanopia (blue-blind)

#1F4E5D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f3c8a;
/* rgb */ color: rgb(63, 60, 138);
/* oklch */ color: oklch(40.4% 0.126 280.9);

Tailwind

colors: {
  custom: {
    50: '#7b71ad',
    500: '#3f3c8a',
    950: '#000000',
  },
}

SCSS

$custom: #3f3c8a;
$custom-light: #7b71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3c8a",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 242.308,
    "s": 39.394,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40394,
    "c": 0.12607,
    "h": 280.9
  },
  "luminance": 0.06123
}

Semantic roles & 50–950 ramp

primary

#3F3C8A

secondary

#ADAF73

accent

#CF59CB

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #3F3C8A

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

Preview Lab → · Contrast checker → · Palette generator →