#3F3AAA#3F3AAA

#3F3AAA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.173 H 278.1°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F3AAA
RGB	rgb(63, 58, 170)
HSL	hsl(243, 49%, 45%)
HSV	hsv(243, 66%, 67%)
CMYK	cmyk(62.9%, 65.9%, 0%, 33.3%)
CIE-LAB	lab(31.77, 36.39, -59.43)
CIE-LCH	lch(31.77, 69.68, 301.48°)
OKLab	oklab(42.7% 0.0244 -0.1713)
OKLCH	oklch(42.7% 0.173 278.1)
XYZ	xyz(10.8163, 6.9843, 38.8005)
Luminance	0.0698 (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

#3F3AAA #A5AA3A

analogous

#3A6DAA #3F3AAA #773AAA

triadic

#3F3AAA #AA3F3A #3AAA3F

tetradic

#3F3AAA #AA3A6D #A5AA3A #3AAA77

square

#3F3AAA #AA3A6D #A5AA3A #3AAA77

split-complementary

#3F3AAA #AA773A #6DAA3A

monochromatic

#1D1B4F #2E2A7C #3F3AAA #5F5AC7 #8C88D6

Accessibility & contrast

On white

8.76

#3F3AAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3F3AAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3AAA

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3AAA	#FFFFFF	#000000	##FFFFFF
##3F3AAA	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAE

Deuteranopia (green-blind)

#0046A8

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f3aaa;
/* rgb */ color: rgb(63, 58, 170);
/* oklch */ color: oklch(42.7% 0.173 278.1);

Tailwind

colors: {
  custom: {
    50: '#8071c4',
    500: '#3f3aaa',
    950: '#000000',
  },
}

SCSS

$custom: #3f3aaa;
$custom-light: #8071c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3aaa",
  "rgb": {
    "r": 63,
    "g": 58,
    "b": 170
  },
  "hsl": {
    "h": 242.679,
    "s": 49.123,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42698,
    "c": 0.17299,
    "h": 278.1
  },
  "luminance": 0.06985
}

Semantic roles & 50–950 ramp

primary

#3F3AAA

secondary

#BEC17F

accent

#D94FD3

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3F3AAA

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

Preview Lab → · Contrast checker → · Palette generator →