#3F30AA#3F30AA

#3F30AA is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.1% C 0.185 H 280.1°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F30AA
RGB	rgb(63, 48, 170)
HSL	hsl(247, 56%, 43%)
HSV	hsv(247, 72%, 67%)
CMYK	cmyk(62.9%, 71.8%, 0%, 33.3%)
CIE-LAB	lab(29.59, 42.32, -63.00)
CIE-LCH	lch(29.59, 75.89, 303.89°)
OKLab	oklab(41.13% 0.0323 -0.1817)
OKLCH	oklch(41.13% 0.185 280.1)
XYZ	xyz(10.3602, 6.0722, 38.6485)
Luminance	0.0607 (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

#3F30AA #9BAA30

analogous

#305EAA #3F30AA #7C30AA

triadic

#3F30AA #AA3F30 #30AA3F

tetradic

#3F30AA #AA305E #9BAA30 #30AA7C

square

#3F30AA #AA305E #9BAA30 #30AA7C

split-complementary

#3F30AA #AA7C30 #5EAA30

monochromatic

#1C154B #2D237A #3F30AA #5B4BCC #867BDA

Accessibility & contrast

On white

9.48

#3F30AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#3F30AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F30AA

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F30AA	#FFFFFF	#000000	##FFFFFF
##3F30AA	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAE

Deuteranopia (green-blind)

#0041A8

Tritanopia (blue-blind)

#00516A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f30aa;
/* rgb */ color: rgb(63, 48, 170);
/* oklch */ color: oklch(41.1% 0.185 280.1);

Tailwind

colors: {
  custom: {
    50: '#816ac4',
    500: '#3f30aa',
    950: '#000000',
  },
}

SCSS

$custom: #3f30aa;
$custom-light: #816ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f30aa",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 170
  },
  "hsl": {
    "h": 247.377,
    "s": 55.963,
    "l": 42.745
  },
  "oklch": {
    "l": 0.41131,
    "c": 0.18455,
    "h": 280.1
  },
  "luminance": 0.06073
}

Semantic roles & 50–950 ramp

primary

#3F30AA

secondary

#B8C274

accent

#DF49CD

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3F30AA

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

Preview Lab → · Contrast checker → · Palette generator →