#3963B8#3963B8

#3963B8 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.5% C 0.142 H 262.7°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3963B8
RGB	rgb(57, 99, 184)
HSL	hsl(220, 53%, 47%)
HSV	hsv(220, 69%, 72%)
CMYK	cmyk(69%, 46.2%, 0%, 27.8%)
CIE-LAB	lab(43.14, 14.06, -49.31)
CIE-LCH	lch(43.14, 51.27, 285.92°)
OKLab	oklab(51.45% -0.0181 -0.1411)
OKLCH	oklch(51.45% 0.142 262.7)
XYZ	xyz(14.7978, 13.2527, 47.1163)
Luminance	0.1325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963B8 #B88E39

analogous

#39A3B8 #3963B8 #4E39B8

triadic

#3963B8 #B83963 #63B839

tetradic

#3963B8 #B839A3 #B88E39 #39B84E

square

#3963B8 #B839A3 #B88E39 #39B84E

split-complementary

#3963B8 #B84E39 #A3B839

monochromatic

#1C315B #2B4A89 #3963B8 #6085CE #8FA9DC

Accessibility & contrast

On white

5.75

#3963B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3963B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963B8

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963B8	#FFFFFF	#000000	##FFFFFF
##3963B8	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386CBB

Deuteranopia (green-blind)

#1E60B6

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3963b8;
/* rgb */ color: rgb(57, 99, 184);
/* oklch */ color: oklch(51.5% 0.142 262.7);

Tailwind

colors: {
  custom: {
    50: '#7e8ece',
    500: '#3963b8',
    950: '#000000',
  },
}

SCSS

$custom: #3963b8;
$custom-light: #7e8ece;
$custom-dark: #000000;

JSON

{
  "hex": "#3963b8",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 184
  },
  "hsl": {
    "h": 220.157,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.51453,
    "c": 0.14231,
    "h": 262.7
  },
  "luminance": 0.13254
}

Semantic roles & 50–950 ramp

primary

#3963B8

secondary

#C7B186

accent

#AC4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3963B8

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

Preview Lab → · Contrast checker → · Palette generator →