#3864AB#3864AB

#3864AB is a mid, vivid blue. Relative luminance 0.129; OKLCH L 50.8% C 0.123 H 259.5°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#3864AB
RGB	rgb(56, 100, 171)
HSL	hsl(217, 51%, 45%)
HSV	hsv(217, 67%, 67%)
CMYK	cmyk(67.3%, 41.5%, 0%, 32.9%)
CIE-LAB	lab(42.60, 8.51, -42.55)
CIE-LCH	lch(42.60, 43.39, 281.31°)
OKLab	oklab(50.77% -0.0224 -0.1213)
OKLCH	oklch(50.77% 0.123 259.5)
XYZ	xyz(13.5361, 12.8940, 40.2956)
Luminance	0.1290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3864AB #AB7F38

analogous

#389EAB #3864AB #4538AB

triadic

#3864AB #AB3864 #64AB38

tetradic

#3864AB #AB389E #AB7F38 #38AB45

square

#3864AB #AB389E #AB7F38 #38AB45

split-complementary

#3864AB #AB4538 #9EAB38

monochromatic

#1A2E4F #29497D #3864AB #5883C8 #86A5D7

Accessibility & contrast

On white

5.87

#3864AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#3864AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3864AB

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3864AB	#FFFFFF	#000000	##FFFFFF
##3864AB	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436AAE

Deuteranopia (green-blind)

#3260AA

Tritanopia (blue-blind)

#00747F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3864ab;
/* rgb */ color: rgb(56, 100, 171);
/* oklch */ color: oklch(50.8% 0.123 259.5);

Tailwind

colors: {
  custom: {
    50: '#7b8fc4',
    500: '#3864ab',
    950: '#000000',
  },
}

SCSS

$custom: #3864ab;
$custom-light: #7b8fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3864ab",
  "rgb": {
    "r": 56,
    "g": 100,
    "b": 171
  },
  "hsl": {
    "h": 217.043,
    "s": 50.661,
    "l": 44.51
  },
  "oklch": {
    "l": 0.50773,
    "c": 0.12336,
    "h": 259.5
  },
  "luminance": 0.12895
}

Semantic roles & 50–950 ramp

primary

#3864AB

secondary

#C1A77D

accent

#A44EDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3864AB

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

Preview Lab → · Contrast checker → · Palette generator →