#3F4CBD#3F4CBD

#3F4CBD is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.5% C 0.176 H 272.7°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CBD
RGB	rgb(63, 76, 189)
HSL	hsl(234, 50%, 49%)
HSV	hsv(234, 67%, 74%)
CMYK	cmyk(66.7%, 59.8%, 0%, 25.9%)
CIE-LAB	lab(37.66, 31.61, -61.08)
CIE-LCH	lch(37.66, 68.77, 297.36°)
OKLab	oklab(47.51% 0.0084 -0.176)
OKLCH	oklch(47.51% 0.176 272.7)
XYZ	xyz(13.8166, 9.8985, 49.3167)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.98

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CBD #BDB03F

analogous

#3F8BBD #3F4CBD #713FBD

triadic

#3F4CBD #BD3F4C #4CBD3F

tetradic

#3F4CBD #BD3F8B #BDB03F #3FBD71

square

#3F4CBD #BD3F8B #BDB03F #3FBD71

split-complementary

#3F4CBD #BD713F #8BBD3F

monochromatic

#202761 #303A8F #3F4CBD #6B76CE #99A0DD

Accessibility & contrast

On white

7.05

#3F4CBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3F4CBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CBD

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CBD	#FFFFFF	#000000	##FFFFFF
##3F4CBD	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)

#005EC1

Deuteranopia (green-blind)

#0053BB

Tritanopia (blue-blind)

#00687D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4cbd;
/* rgb */ color: rgb(63, 76, 189);
/* oklch */ color: oklch(47.5% 0.176 272.7);

Tailwind

colors: {
  custom: {
    50: '#837ed2',
    500: '#3f4cbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cbd;
$custom-light: #837ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cbd",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 189
  },
  "hsl": {
    "h": 233.81,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.47507,
    "c": 0.17617,
    "h": 272.7
  },
  "luminance": 0.099
}

Semantic roles & 50–950 ramp

primary

#3F4CBD

secondary

#C9C38F

accent

#CB4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4CBD

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

Preview Lab → · Contrast checker → · Palette generator →