#3F3AA5#3F3AA5

#3F3AA5 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.166 H 278.6°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F3AA5
RGB	rgb(63, 58, 165)
HSL	hsl(243, 48%, 44%)
HSV	hsv(243, 65%, 65%)
CMYK	cmyk(61.8%, 64.8%, 0%, 35.3%)
CIE-LAB	lab(31.34, 34.71, -57.12)
CIE-LCH	lch(31.34, 66.84, 301.29°)
OKLab	oklab(42.26% 0.0249 -0.1645)
OKLCH	oklch(42.26% 0.166 278.6)
XYZ	xyz(10.3523, 6.7987, 36.3568)
Luminance	0.0680 (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

#3F3AA5 #A0A53A

analogous

#3A6AA5 #3F3AA5 #743AA5

triadic

#3F3AA5 #A53F3A #3AA53F

tetradic

#3F3AA5 #A53A6A #A0A53A #3AA574

square

#3F3AA5 #A53A6A #A0A53A #3AA574

split-complementary

#3F3AA5 #A5743A #6AA53A

monochromatic

#1C1A4A #2E2A78 #3F3AA5 #5D58C4 #8985D4

Accessibility & contrast

On white

8.90

#3F3AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3F3AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3AA5

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3AA5	#FFFFFF	#000000	##FFFFFF
##3F3AA5	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA8

Deuteranopia (green-blind)

#0045A3

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f3aa5;
/* rgb */ color: rgb(63, 58, 165);
/* oklch */ color: oklch(42.3% 0.166 278.6);

Tailwind

colors: {
  custom: {
    50: '#7f71c1',
    500: '#3f3aa5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3aa5;
$custom-light: #7f71c1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3aa5",
  "rgb": {
    "r": 63,
    "g": 58,
    "b": 165
  },
  "hsl": {
    "h": 242.804,
    "s": 47.982,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42255,
    "c": 0.16637,
    "h": 278.6
  },
  "luminance": 0.06799
}

Semantic roles & 50–950 ramp

primary

#3F3AA5

secondary

#BBBE7D

accent

#D850D1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3F3AA5

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

Preview Lab → · Contrast checker → · Palette generator →