#3F4BC0#3F4BC0

#3F4BC0 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.6% C 0.181 H 272.9°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BC0
RGB	rgb(63, 75, 192)
HSL	hsl(234, 51%, 50%)
HSV	hsv(234, 67%, 75%)
CMYK	cmyk(67.2%, 60.9%, 0%, 24.7%)
CIE-LAB	lab(37.65, 33.29, -62.85)
CIE-LCH	lch(37.65, 71.12, 297.91°)
OKLab	oklab(47.58% 0.0092 -0.1812)
OKLCH	oklch(47.58% 0.181 272.9)
XYZ	xyz(14.0772, 9.8934, 51.0267)
Luminance	0.0989 (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

#3F4BC0 #C0B43F

analogous

#3F8BC0 #3F4BC0 #743FC0

triadic

#3F4BC0 #C03F4B #4BC03F

tetradic

#3F4BC0 #C03F8B #C0B43F #3FC074

square

#3F4BC0 #C03F8B #C0B43F #3FC074

split-complementary

#3F4BC0 #C0743F #8BC03F

monochromatic

#212764 #303992 #3F4BC0 #6D76CF #9BA1DE

Accessibility & contrast

On white

7.05

#3F4BC0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3F4BC0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BC0

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BC0	#FFFFFF	#000000	##FFFFFF
##3F4BC0	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC4

Deuteranopia (green-blind)

#0053BE

Tritanopia (blue-blind)

#00687E

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4bc0;
/* rgb */ color: rgb(63, 75, 192);
/* oklch */ color: oklch(47.6% 0.181 272.9);

Tailwind

colors: {
  custom: {
    50: '#837dd4',
    500: '#3f4bc0',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bc0;
$custom-light: #837dd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bc0",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 192
  },
  "hsl": {
    "h": 234.419,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.47575,
    "c": 0.18141,
    "h": 272.9
  },
  "luminance": 0.09895
}

Semantic roles & 50–950 ramp

primary

#3F4BC0

secondary

#CAC591

accent

#CD4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4BC0

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

Preview Lab → · Contrast checker → · Palette generator →