#3963B7#3963B7

#3963B7 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.4% C 0.141 H 262.5°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3963B7
RGB	rgb(57, 99, 183)
HSL	hsl(220, 53%, 47%)
HSV	hsv(220, 69%, 72%)
CMYK	cmyk(68.9%, 45.9%, 0%, 28.2%)
CIE-LAB	lab(43.08, 13.69, -48.82)
CIE-LCH	lch(43.08, 50.71, 285.67°)
OKLab	oklab(51.39% -0.0183 -0.1397)
OKLCH	oklch(51.39% 0.141 262.5)
XYZ	xyz(14.6934, 13.2110, 46.5662)
Luminance	0.1321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963B7 #B78D39

analogous

#39A2B7 #3963B7 #4E39B7

triadic

#3963B7 #B73963 #63B739

tetradic

#3963B7 #B739A2 #B78D39 #39B74E

square

#3963B7 #B739A2 #B78D39 #39B74E

split-complementary

#3963B7 #B74E39 #A2B739

monochromatic

#1C315A #2A4A88 #3963B7 #6084CD #8EA8DC

Accessibility & contrast

On white

5.77

#3963B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3963B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963B7

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963B7	#FFFFFF	#000000	##FFFFFF
##3963B7	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396CBA

Deuteranopia (green-blind)

#2060B5

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3963b7;
/* rgb */ color: rgb(57, 99, 183);
/* oklch */ color: oklch(51.4% 0.141 262.5);

Tailwind

colors: {
  custom: {
    50: '#7e8ecd',
    500: '#3963b7',
    950: '#000000',
  },
}

SCSS

$custom: #3963b7;
$custom-light: #7e8ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3963b7",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 183
  },
  "hsl": {
    "h": 220,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.51385,
    "c": 0.14092,
    "h": 262.5
  },
  "luminance": 0.13212
}

Semantic roles & 50–950 ramp

primary

#3963B7

secondary

#C7B185

accent

#AC4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3963B7

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

Preview Lab → · Contrast checker → · Palette generator →