#3F3CA5#3F3CA5

#3F3CA5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.164 H 278.1°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CA5
RGB	rgb(63, 60, 165)
HSL	hsl(242, 47%, 44%)
HSV	hsv(242, 64%, 65%)
CMYK	cmyk(61.8%, 63.6%, 0%, 35.3%)
CIE-LAB	lab(31.82, 33.46, -56.35)
CIE-LCH	lch(31.82, 65.54, 300.70°)
OKLab	oklab(42.6% 0.0232 -0.1622)
OKLCH	oklch(42.6% 0.164 278.1)
XYZ	xyz(10.4551, 7.0043, 36.3910)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.63

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CA5 #A2A53C

analogous

#3C6EA5 #3F3CA5 #743CA5

triadic

#3F3CA5 #A53F3C #3CA53F

tetradic

#3F3CA5 #A53C6E #A2A53C #3CA574

square

#3F3CA5 #A53C6E #A2A53C #3CA574

split-complementary

#3F3CA5 #A5743C #6EA53C

monochromatic

#1D1B4B #2E2C78 #3F3CA5 #5E5BC3 #8A88D4

Accessibility & contrast

On white

8.75

#3F3CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3F3CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CA5

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CA5	#FFFFFF	#000000	##FFFFFF
##3F3CA5	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0047A3

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f3ca5;
/* rgb */ color: rgb(63, 60, 165);
/* oklch */ color: oklch(42.6% 0.164 278.1);

Tailwind

colors: {
  custom: {
    50: '#7f72c1',
    500: '#3f3ca5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3ca5;
$custom-light: #7f72c1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3ca5",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 165
  },
  "hsl": {
    "h": 241.714,
    "s": 46.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.426,
    "c": 0.16386,
    "h": 278.1
  },
  "luminance": 0.07005
}

Semantic roles & 50–950 ramp

primary

#3F3CA5

secondary

#BCBE7F

accent

#D651D3

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3F3CA5

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

Preview Lab → · Contrast checker → · Palette generator →