#3F4BBF#3F4BBF

#3F4BBF is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.5% C 0.180 H 272.9°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BBF
RGB	rgb(63, 75, 191)
HSL	hsl(234, 50%, 50%)
HSV	hsv(234, 67%, 75%)
CMYK	cmyk(67%, 60.7%, 0%, 25.1%)
CIE-LAB	lab(37.57, 32.94, -62.39)
CIE-LCH	lch(37.57, 70.56, 297.83°)
OKLab	oklab(47.49% 0.0092 -0.1798)
OKLCH	oklch(47.49% 0.18 272.9)
XYZ	xyz(13.9668, 9.8492, 50.4452)
Luminance	0.0985 (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

#3F4BBF #BFB33F

analogous

#3F8BBF #3F4BBF #733FBF

triadic

#3F4BBF #BF3F4B #4BBF3F

tetradic

#3F4BBF #BF3F8B #BFB33F #3FBF73

square

#3F4BBF #BF3F8B #BFB33F #3FBF73

split-complementary

#3F4BBF #BF733F #8BBF3F

monochromatic

#212763 #303991 #3F4BBF #6D76CF #9BA1DE

Accessibility & contrast

On white

7.07

#3F4BBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F4BBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BBF

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BBF	#FFFFFF	#000000	##FFFFFF
##3F4BBF	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC3

Deuteranopia (green-blind)

#0053BD

Tritanopia (blue-blind)

#00687E

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4bbf;
/* rgb */ color: rgb(63, 75, 191);
/* oklch */ color: oklch(47.5% 0.180 272.9);

Tailwind

colors: {
  custom: {
    50: '#837dd3',
    500: '#3f4bbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bbf;
$custom-light: #837dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bbf",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 191
  },
  "hsl": {
    "h": 234.375,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.47491,
    "c": 0.18008,
    "h": 272.9
  },
  "luminance": 0.09851
}

Semantic roles & 50–950 ramp

primary

#3F4BBF

secondary

#CAC490

accent

#CD4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4BBF

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

Preview Lab → · Contrast checker → · Palette generator →