#3963C8#3963C8

#3963C8 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.6% C 0.164 H 264.4°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3963C8
RGB	rgb(57, 99, 200)
HSL	hsl(222, 57%, 50%)
HSV	hsv(222, 72%, 78%)
CMYK	cmyk(71.5%, 50.5%, 0%, 21.6%)
CIE-LAB	lab(44.18, 19.93, -56.92)
CIE-LCH	lch(44.18, 60.31, 289.30°)
OKLab	oklab(52.58% -0.0159 -0.1635)
OKLCH	oklch(52.58% 0.164 264.4)
XYZ	xyz(16.5708, 13.9619, 56.4540)
Luminance	0.1396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963C8 #C89E39

analogous

#39AAC8 #3963C8 #5739C8

triadic

#3963C8 #C83963 #63C839

tetradic

#3963C8 #C839AA #C89E39 #39C857

square

#3963C8 #C839AA #C89E39 #39C857

split-complementary

#3963C8 #C85739 #AAC839

monochromatic

#1D3469 #2B4B99 #3963C8 #6989D5 #99AEE3

Accessibility & contrast

On white

5.54

#3963C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3963C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963C8

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963C8	#FFFFFF	#000000	##FFFFFF
##3963C8	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#266FCC

Deuteranopia (green-blind)

#0062C6

Tritanopia (blue-blind)

#007B8C

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3963c8;
/* rgb */ color: rgb(57, 99, 200);
/* oklch */ color: oklch(52.6% 0.164 264.4);

Tailwind

colors: {
  custom: {
    50: '#818ed9',
    500: '#3963c8',
    950: '#000000',
  },
}

SCSS

$custom: #3963c8;
$custom-light: #818ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#3963c8",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 200
  },
  "hsl": {
    "h": 222.378,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.52577,
    "c": 0.16432,
    "h": 264.4
  },
  "luminance": 0.13964
}

Semantic roles & 50–950 ramp

primary

#3963C8

secondary

#CEBC8F

accent

#B348E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3963C8

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

Preview Lab → · Contrast checker → · Palette generator →