#3F4BBD#3F4BBD

#3F4BBD is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.3% C 0.177 H 273.0°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BBD
RGB	rgb(63, 75, 189)
HSL	hsl(234, 50%, 49%)
HSV	hsv(234, 67%, 74%)
CMYK	cmyk(66.7%, 60.3%, 0%, 25.9%)
CIE-LAB	lab(37.41, 32.24, -61.48)
CIE-LCH	lch(37.41, 69.42, 297.67°)
OKLab	oklab(47.32% 0.0092 -0.1772)
OKLCH	oklch(47.32% 0.177 273)
XYZ	xyz(13.7482, 9.7618, 49.2939)
Luminance	0.0976 (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

#3F4BBD #BDB13F

analogous

#3F8ABD #3F4BBD #723FBD

triadic

#3F4BBD #BD3F4B #4BBD3F

tetradic

#3F4BBD #BD3F8A #BDB13F #3FBD72

square

#3F4BBD #BD3F8A #BDB13F #3FBD72

split-complementary

#3F4BBD #BD723F #8ABD3F

monochromatic

#202761 #30398F #3F4BBD #6B75CE #99A0DD

Accessibility & contrast

On white

7.11

#3F4BBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F4BBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BBD

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BBD	#FFFFFF	#000000	##FFFFFF
##3F4BBD	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC1

Deuteranopia (green-blind)

#0052BB

Tritanopia (blue-blind)

#00677D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4bbd;
/* rgb */ color: rgb(63, 75, 189);
/* oklch */ color: oklch(47.3% 0.177 273.0);

Tailwind

colors: {
  custom: {
    50: '#837dd2',
    500: '#3f4bbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bbd;
$custom-light: #837dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bbd",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 189
  },
  "hsl": {
    "h": 234.286,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.47323,
    "c": 0.17741,
    "h": 273
  },
  "luminance": 0.09763
}

Semantic roles & 50–950 ramp

primary

#3F4BBD

secondary

#C9C38F

accent

#CC4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4BBD

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

Preview Lab → · Contrast checker → · Palette generator →