#3963BD#3963BD

#3963BD is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.8% C 0.149 H 263.3°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3963BD
RGB	rgb(57, 99, 189)
HSL	hsl(221, 54%, 48%)
HSV	hsv(221, 70%, 74%)
CMYK	cmyk(69.8%, 47.6%, 0%, 25.9%)
CIE-LAB	lab(43.46, 15.89, -51.71)
CIE-LCH	lch(43.46, 54.10, 287.09°)
OKLab	oklab(51.8% -0.0174 -0.1482)
OKLCH	oklch(51.8% 0.149 263.3)
XYZ	xyz(15.3312, 13.4661, 49.9255)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963BD #BD9339

analogous

#39A5BD #3963BD #5139BD

triadic

#3963BD #BD3963 #63BD39

tetradic

#3963BD #BD39A5 #BD9339 #39BD51

square

#3963BD #BD39A5 #BD9339 #39BD51

split-complementary

#3963BD #BD5139 #A5BD39

monochromatic

#1D325F #2B4A8E #3963BD #6386D0 #92AADE

Accessibility & contrast

On white

5.69

#3963BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3963BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963BD

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963BD	#FFFFFF	#000000	##FFFFFF
##3963BD	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336DC0

Deuteranopia (green-blind)

#1361BB

Tritanopia (blue-blind)

#007887

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3963bd;
/* rgb */ color: rgb(57, 99, 189);
/* oklch */ color: oklch(51.8% 0.149 263.3);

Tailwind

colors: {
  custom: {
    50: '#7f8ed1',
    500: '#3963bd',
    950: '#000000',
  },
}

SCSS

$custom: #3963bd;
$custom-light: #7f8ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#3963bd",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 189
  },
  "hsl": {
    "h": 220.909,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.51796,
    "c": 0.14924,
    "h": 263.3
  },
  "luminance": 0.13468
}

Semantic roles & 50–950 ramp

primary

#3963BD

secondary

#C9B589

accent

#AE4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3963BD

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

Preview Lab → · Contrast checker → · Palette generator →