#3F4BBA#3F4BBA

#3F4BBA is a mid, vivid blue. Relative luminance 0.096; OKLCH L 47.1% C 0.173 H 273.1°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BBA
RGB	rgb(63, 75, 186)
HSL	hsl(234, 49%, 49%)
HSV	hsv(234, 66%, 73%)
CMYK	cmyk(66.1%, 59.7%, 0%, 27.1%)
CIE-LAB	lab(37.18, 31.19, -60.11)
CIE-LCH	lch(37.18, 67.72, 297.43°)
OKLab	oklab(47.08% 0.0093 -0.1731)
OKLCH	oklch(47.08% 0.173 273.1)
XYZ	xyz(13.4259, 9.6329, 47.5967)
Luminance	0.0963 (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

#3F4BBA #BAAE3F

analogous

#3F89BA #3F4BBA #713FBA

triadic

#3F4BBA #BA3F4B #4BBA3F

tetradic

#3F4BBA #BA3F89 #BAAE3F #3FBA71

square

#3F4BBA #BA3F89 #BAAE3F #3FBA71

split-complementary

#3F4BBA #BA713F #89BA3F

monochromatic

#20265F #30398C #3F4BBA #6A73CC #979EDC

Accessibility & contrast

On white

7.18

#3F4BBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3F4BBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BBA

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BBA	#FFFFFF	#000000	##FFFFFF
##3F4BBA	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBE

Deuteranopia (green-blind)

#0052B8

Tritanopia (blue-blind)

#00667B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4bba;
/* rgb */ color: rgb(63, 75, 186);
/* oklch */ color: oklch(47.1% 0.173 273.1);

Tailwind

colors: {
  custom: {
    50: '#827dd0',
    500: '#3f4bba',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bba;
$custom-light: #827dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bba",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 186
  },
  "hsl": {
    "h": 234.146,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.47075,
    "c": 0.17338,
    "h": 273.1
  },
  "luminance": 0.09634
}

Semantic roles & 50–950 ramp

primary

#3F4BBA

secondary

#C8C28D

accent

#CB4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4BBA

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

Preview Lab → · Contrast checker → · Palette generator →