#3963B0#3963B0

#3963B0 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 50.9% C 0.131 H 261.4°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3963B0
RGB	rgb(57, 99, 176)
HSL	hsl(219, 51%, 46%)
HSV	hsv(219, 68%, 69%)
CMYK	cmyk(67.6%, 43.8%, 0%, 31%)
CIE-LAB	lab(42.65, 11.14, -45.41)
CIE-LCH	lch(42.65, 46.76, 283.78°)
OKLab	oklab(50.92% -0.0196 -0.1297)
OKLCH	oklch(50.92% 0.131 261.4)
XYZ	xyz(13.9829, 12.9267, 42.8241)
Luminance	0.1293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963B0 #B08639

analogous

#399EB0 #3963B0 #4B39B0

triadic

#3963B0 #B03963 #63B039

tetradic

#3963B0 #B0399E #B08639 #39B04B

square

#3963B0 #B0399E #B08639 #39B04B

split-complementary

#3963B0 #B04B39 #9EB039

monochromatic

#1B2F54 #2A4982 #3963B0 #5C83CA #8AA6D9

Accessibility & contrast

On white

5.86

#3963B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3963B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963B0

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963B0	#FFFFFF	#000000	##FFFFFF
##3963B0	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E6BB3

Deuteranopia (green-blind)

#2A60AE

Tritanopia (blue-blind)

#007581

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3963b0;
/* rgb */ color: rgb(57, 99, 176);
/* oklch */ color: oklch(50.9% 0.131 261.4);

Tailwind

colors: {
  custom: {
    50: '#7c8ec8',
    500: '#3963b0',
    950: '#000000',
  },
}

SCSS

$custom: #3963b0;
$custom-light: #7c8ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#3963b0",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 176
  },
  "hsl": {
    "h": 218.824,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.50919,
    "c": 0.13117,
    "h": 261.4
  },
  "luminance": 0.12928
}

Semantic roles & 50–950 ramp

primary

#3963B0

secondary

#C4AC81

accent

#A94DDB

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3963B0

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

Preview Lab → · Contrast checker → · Palette generator →