#3963BA#3963BA

#3963BA is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.6% C 0.145 H 262.9°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#3963BA
RGB	rgb(57, 99, 186)
HSL	hsl(220, 53%, 48%)
HSV	hsv(220, 69%, 73%)
CMYK	cmyk(69.4%, 46.8%, 0%, 27.1%)
CIE-LAB	lab(43.27, 14.79, -50.27)
CIE-LCH	lch(43.27, 52.40, 286.40°)
OKLab	oklab(51.59% -0.0178 -0.144)
OKLCH	oklch(51.59% 0.145 262.9)
XYZ	xyz(15.0090, 13.3372, 48.2282)
Luminance	0.1334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963BA #BA9039

analogous

#39A3BA #3963BA #4F39BA

triadic

#3963BA #BA3963 #63BA39

tetradic

#3963BA #BA39A3 #BA9039 #39BA4F

square

#3963BA #BA39A3 #BA9039 #39BA4F

split-complementary

#3963BA #BA4F39 #A3BA39

monochromatic

#1C315C #2B4A8B #3963BA #6185CF #90A9DD

Accessibility & contrast

On white

5.73

#3963BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3963BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963BA

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963BA	#FFFFFF	#000000	##FFFFFF
##3963BA	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366DBD

Deuteranopia (green-blind)

#1A61B8

Tritanopia (blue-blind)

#007785

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3963ba;
/* rgb */ color: rgb(57, 99, 186);
/* oklch */ color: oklch(51.6% 0.145 262.9);

Tailwind

colors: {
  custom: {
    50: '#7e8ecf',
    500: '#3963ba',
    950: '#000000',
  },
}

SCSS

$custom: #3963ba;
$custom-light: #7e8ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#3963ba",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 186
  },
  "hsl": {
    "h": 220.465,
    "s": 53.086,
    "l": 47.647
  },
  "oklch": {
    "l": 0.51589,
    "c": 0.14509,
    "h": 262.9
  },
  "luminance": 0.13339
}

Semantic roles & 50–950 ramp

primary

#3963BA

secondary

#C8B387

accent

#AD4BDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3963BA

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

Preview Lab → · Contrast checker → · Palette generator →