#3961BB#3961BB

#3961BB is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.2% C 0.149 H 263.9°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#3961BB
RGB	rgb(57, 97, 187)
HSL	hsl(222, 53%, 48%)
HSV	hsv(222, 70%, 73%)
CMYK	cmyk(69.5%, 48.1%, 0%, 26.7%)
CIE-LAB	lab(42.77, 16.45, -51.65)
CIE-LCH	lch(42.77, 54.20, 287.66°)
OKLab	oklab(51.23% -0.0158 -0.1481)
OKLCH	oklch(51.23% 0.149 263.9)
XYZ	xyz(14.9285, 13.0056, 48.7277)
Luminance	0.1301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3961BB #BB9339

analogous

#39A2BB #3961BB #5239BB

triadic

#3961BB #BB3961 #61BB39

tetradic

#3961BB #BB39A2 #BB9339 #39BB52

square

#3961BB #BB39A2 #BB9339 #39BB52

split-complementary

#3961BB #BB5239 #A2BB39

monochromatic

#1C305D #2B498C #3961BB #6284CF #91A8DD

Accessibility & contrast

On white

5.83

#3961BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#3961BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3961BB

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3961BB	#FFFFFF	#000000	##FFFFFF
##3961BB	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316BBE

Deuteranopia (green-blind)

#0F5FB9

Tritanopia (blue-blind)

#007685

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3961bb;
/* rgb */ color: rgb(57, 97, 187);
/* oklch */ color: oklch(51.2% 0.149 263.9);

Tailwind

colors: {
  custom: {
    50: '#7f8dd0',
    500: '#3961bb',
    950: '#000000',
  },
}

SCSS

$custom: #3961bb;
$custom-light: #7f8dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3961bb",
  "rgb": {
    "r": 57,
    "g": 97,
    "b": 187
  },
  "hsl": {
    "h": 221.538,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.5123,
    "c": 0.14892,
    "h": 263.9
  },
  "luminance": 0.13007
}

Semantic roles & 50–950 ramp

primary

#3961BB

secondary

#C8B487

accent

#B04BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3961BB

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

Preview Lab → · Contrast checker → · Palette generator →