#3963D0#3963D0

#3963D0 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.2% C 0.175 H 265.1°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3963D0
RGB	rgb(57, 99, 208)
HSL	hsl(223, 62%, 52%)
HSV	hsv(223, 73%, 82%)
CMYK	cmyk(72.6%, 52.4%, 0%, 18.4%)
CIE-LAB	lab(44.72, 22.87, -60.63)
CIE-LCH	lch(44.72, 64.80, 290.66°)
OKLab	oklab(53.17% -0.0151 -0.1745)
OKLCH	oklch(53.17% 0.175 265.1)
XYZ	xyz(17.5303, 14.3457, 61.5074)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963D0 #D0A639

analogous

#39AFD0 #3963D0 #5A39D0

triadic

#3963D0 #D03963 #63D039

tetradic

#3963D0 #D039AF #D0A639 #39D05A

square

#3963D0 #D039AF #D0A639 #39D05A

split-complementary

#3963D0 #D05A39 #AFD039

monochromatic

#1B3473 #274AA5 #3963D0 #6A8ADC #9CB1E7

Accessibility & contrast

On white

5.43

#3963D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3963D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963D0

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963D0	#FFFFFF	#000000	##FFFFFF
##3963D0	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1771D4

Deuteranopia (green-blind)

#0063CE

Tritanopia (blue-blind)

#007D90

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3963d0;
/* rgb */ color: rgb(57, 99, 208);
/* oklch */ color: oklch(53.2% 0.175 265.1);

Tailwind

colors: {
  custom: {
    50: '#838edf',
    500: '#3963d0',
    950: '#000000',
  },
}

SCSS

$custom: #3963d0;
$custom-light: #838edf;
$custom-dark: #000000;

JSON

{
  "hex": "#3963d0",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 208
  },
  "hsl": {
    "h": 223.311,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53166,
    "c": 0.17513,
    "h": 265.1
  },
  "luminance": 0.14348
}

Semantic roles & 50–950 ramp

primary

#3963D0

secondary

#D3C191

accent

#B843E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3963D0

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

Preview Lab → · Contrast checker → · Palette generator →