#3F4AA4#3F4AA4

#3F4AA4 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.1% C 0.144 H 273.9°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F4AA4
RGB	rgb(63, 74, 164)
HSL	hsl(233, 44%, 45%)
HSV	hsv(233, 62%, 64%)
CMYK	cmyk(61.6%, 54.9%, 0%, 35.7%)
CIE-LAB	lab(35.27, 24.12, -50.15)
CIE-LCH	lch(35.27, 55.65, 295.69°)
OKLab	oklab(45.13% 0.0098 -0.1438)
OKLCH	oklch(45.13% 0.144 273.9)
XYZ	xyz(11.1973, 8.6338, 36.1912)
Luminance	0.0863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4AA4 #A4993F

analogous

#3F7DA4 #3F4AA4 #663FA4

triadic

#3F4AA4 #A43F4A #4AA43F

tetradic

#3F4AA4 #A43F7D #A4993F #3FA466

square

#3F4AA4 #A43F7D #A4993F #3FA466

split-complementary

#3F4AA4 #A4663F #7DA43F

monochromatic

#1D224C #2E3678 #3F4AA4 #5F6AC1 #8B93D2

Accessibility & contrast

On white

7.70

#3F4AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3F4AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4AA4

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4AA4	#FFFFFF	#000000	##FFFFFF
##3F4AA4	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C57A7

Deuteranopia (green-blind)

#004FA2

Tritanopia (blue-blind)

#005F6F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f4aa4;
/* rgb */ color: rgb(63, 74, 164);
/* oklch */ color: oklch(45.1% 0.144 273.9);

Tailwind

colors: {
  custom: {
    50: '#7e7cc0',
    500: '#3f4aa4',
    950: '#000000',
  },
}

SCSS

$custom: #3f4aa4;
$custom-light: #7e7cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4aa4",
  "rgb": {
    "r": 63,
    "g": 74,
    "b": 164
  },
  "hsl": {
    "h": 233.465,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.45134,
    "c": 0.14418,
    "h": 273.9
  },
  "luminance": 0.08635
}

Semantic roles & 50–950 ramp

primary

#3F4AA4

secondary

#BDB782

accent

#C654D4

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3F4AA4

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

Preview Lab → · Contrast checker → · Palette generator →