#3963C0#3963C0

#3963C0 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.0% C 0.153 H 263.7°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#3963C0
RGB	rgb(57, 99, 192)
HSL	hsl(221, 54%, 49%)
HSV	hsv(221, 70%, 75%)
CMYK	cmyk(70.3%, 48.4%, 0%, 24.7%)
CIE-LAB	lab(43.65, 17.00, -53.14)
CIE-LCH	lch(43.65, 55.79, 287.73°)
OKLab	oklab(52.01% -0.0169 -0.1524)
OKLCH	oklch(52.01% 0.153 263.7)
XYZ	xyz(15.6602, 13.5977, 51.6583)
Luminance	0.1360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963C0 #C09639

analogous

#39A7C0 #3963C0 #5239C0

triadic

#3963C0 #C03963 #63C039

tetradic

#3963C0 #C039A7 #C09639 #39C052

square

#3963C0 #C039A7 #C09639 #39C052

split-complementary

#3963C0 #C05239 #A7C039

monochromatic

#1D3262 #2B4B91 #3963C0 #6587D1 #94ACDF

Accessibility & contrast

On white

5.65

#3963C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#3963C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963C0

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963C0	#FFFFFF	#000000	##FFFFFF
##3963C0	1.00	5.65	3.72	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306EC3

Deuteranopia (green-blind)

#0761BE

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3963c0;
/* rgb */ color: rgb(57, 99, 192);
/* oklch */ color: oklch(52.0% 0.153 263.7);

Tailwind

colors: {
  custom: {
    50: '#808ed4',
    500: '#3963c0',
    950: '#000000',
  },
}

SCSS

$custom: #3963c0;
$custom-light: #808ed4;
$custom-dark: #000000;

JSON

{
  "hex": "#3963c0",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 192
  },
  "hsl": {
    "h": 221.333,
    "s": 54.217,
    "l": 48.824
  },
  "oklch": {
    "l": 0.52006,
    "c": 0.15338,
    "h": 263.7
  },
  "luminance": 0.13599
}

Semantic roles & 50–950 ramp

primary

#3963C0

secondary

#CBB78A

accent

#B04ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3963C0

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

Preview Lab → · Contrast checker → · Palette generator →