#3F4CBF#3F4CBF

#3F4CBF is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.7% C 0.179 H 272.7°. Best body text is #FFFFFF at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CBF
RGB	rgb(63, 76, 191)
HSL	hsl(234, 50%, 50%)
HSV	hsv(234, 67%, 75%)
CMYK	cmyk(67%, 60.2%, 0%, 25.1%)
CIE-LAB	lab(37.82, 32.31, -61.99)
CIE-LCH	lch(37.82, 69.91, 297.53°)
OKLab	oklab(47.67% 0.0084 -0.1787)
OKLCH	oklch(47.67% 0.179 272.7)
XYZ	xyz(14.0352, 9.9859, 50.4679)
Luminance	0.0999 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.87

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CBF #BFB23F

analogous

#3F8CBF #3F4CBF #723FBF

triadic

#3F4CBF #BF3F4C #4CBF3F

tetradic

#3F4CBF #BF3F8C #BFB23F #3FBF72

square

#3F4CBF #BF3F8C #BFB23F #3FBF72

split-complementary

#3F4CBF #BF723F #8CBF3F

monochromatic

#212763 #303A91 #3F4CBF #6D76CF #9BA1DE

Accessibility & contrast

On white

7.01

#3F4CBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#3F4CBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4CBF

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CBF	#FFFFFF	#000000	##FFFFFF
##3F4CBF	1.00	7.01	3.00	7.01
#FFFFFF	7.01	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC3

Deuteranopia (green-blind)

#0053BD

Tritanopia (blue-blind)

#00697E

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4cbf;
/* rgb */ color: rgb(63, 76, 191);
/* oklch */ color: oklch(47.7% 0.179 272.7);

Tailwind

colors: {
  custom: {
    50: '#837ed3',
    500: '#3f4cbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cbf;
$custom-light: #837ed3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cbf",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 191
  },
  "hsl": {
    "h": 233.906,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.47673,
    "c": 0.17886,
    "h": 272.7
  },
  "luminance": 0.09987
}

Semantic roles & 50–950 ramp

primary

#3F4CBF

secondary

#CAC490

accent

#CC4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4CBF

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

Preview Lab → · Contrast checker → · Palette generator →