#3F3FA4#3F3FA4

#3F3FA4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.159 H 277.4°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FA4
RGB	rgb(63, 63, 164)
HSL	hsl(240, 44%, 45%)
HSV	hsv(240, 62%, 64%)
CMYK	cmyk(61.6%, 61.6%, 0%, 35.7%)
CIE-LAB	lab(32.46, 31.23, -54.70)
CIE-LCH	lch(32.46, 62.99, 299.72°)
OKLab	oklab(43.05% 0.0205 -0.1573)
OKLCH	oklch(43.05% 0.159 277.4)
XYZ	xyz(10.5261, 7.2913, 35.9674)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.96

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FA4 #A4A43F

analogous

#3F72A4 #3F3FA4 #723FA4

triadic

#3F3FA4 #A43F3F #3FA43F

tetradic

#3F3FA4 #A43F72 #A4A43F #3FA472

square

#3F3FA4 #A43F72 #A4A43F #3FA472

split-complementary

#3F3FA4 #A4723F #72A43F

monochromatic

#1D1D4C #2E2E78 #3F3FA4 #5F5FC1 #8B8BD2

Accessibility & contrast

On white

8.54

#3F3FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3F3FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FA4

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FA4	#FFFFFF	#000000	##FFFFFF
##3F3FA4	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A7

Deuteranopia (green-blind)

#0048A2

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f3fa4;
/* rgb */ color: rgb(63, 63, 164);
/* oklch */ color: oklch(43.0% 0.159 277.4);

Tailwind

colors: {
  custom: {
    50: '#7f74c0',
    500: '#3f3fa4',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fa4;
$custom-light: #7f74c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fa4",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 164
  },
  "hsl": {
    "h": 240,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43048,
    "c": 0.15867,
    "h": 277.4
  },
  "luminance": 0.07292
}

Semantic roles & 50–950 ramp

primary

#3F3FA4

secondary

#BDBD82

accent

#D454D4

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3FA4

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

Preview Lab → · Contrast checker → · Palette generator →