#3F5BBA#3F5BBA

#3F5BBA is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.2% C 0.153 H 268.1°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BBA
RGB	rgb(63, 91, 186)
HSL	hsl(226, 49%, 49%)
HSV	hsv(226, 66%, 73%)
CMYK	cmyk(66.1%, 51.1%, 0%, 27.1%)
CIE-LAB	lab(41.35, 20.90, -53.35)
CIE-LCH	lch(41.35, 57.29, 291.40°)
OKLab	oklab(50.2% -0.005 -0.153)
OKLCH	oklch(50.2% 0.153 268.1)
XYZ	xyz(14.6509, 12.0827, 48.0050)
Luminance	0.1208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BBA #BA9E3F

analogous

#3F99BA #3F5BBA #603FBA

triadic

#3F5BBA #BA3F5B #5BBA3F

tetradic

#3F5BBA #BA3F99 #BA9E3F #3FBA60

square

#3F5BBA #BA3F99 #BA9E3F #3FBA60

split-complementary

#3F5BBA #BA603F #99BA3F

monochromatic

#202E5F #30458C #3F5BBA #6A80CC #97A7DC

Accessibility & contrast

On white

6.15

#3F5BBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3F5BBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BBA

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BBA	#FFFFFF	#000000	##FFFFFF
##3F5BBA	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2367BD

Deuteranopia (green-blind)

#005CB8

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5bba;
/* rgb */ color: rgb(63, 91, 186);
/* oklch */ color: oklch(50.2% 0.153 268.1);

Tailwind

colors: {
  custom: {
    50: '#8189cf',
    500: '#3f5bba',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bba;
$custom-light: #8189cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bba",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 186
  },
  "hsl": {
    "h": 226.341,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.50203,
    "c": 0.15312,
    "h": 268.1
  },
  "luminance": 0.12084
}

Semantic roles & 50–950 ramp

primary

#3F5BBA

secondary

#C8BA8D

accent

#BA4FD9

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3F5BBA

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

Preview Lab → · Contrast checker → · Palette generator →