#3865BB#3865BB

#3865BB is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.0% C 0.144 H 261.9°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3865BB
RGB	rgb(56, 101, 187)
HSL	hsl(219, 54%, 48%)
HSV	hsv(219, 70%, 73%)
CMYK	cmyk(70.1%, 46%, 0%, 26.7%)
CIE-LAB	lab(43.85, 13.73, -49.92)
CIE-LCH	lch(43.85, 51.77, 285.38°)
OKLab	oklab(52.04% -0.0203 -0.1429)
OKLCH	oklch(52.04% 0.144 261.9)
XYZ	xyz(15.2510, 13.7344, 48.8513)
Luminance	0.1374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3865BB #BB8E38

analogous

#38A7BB #3865BB #4C38BB

triadic

#3865BB #BB3865 #65BB38

tetradic

#3865BB #BB38A7 #BB8E38 #38BB4C

square

#3865BB #BB38A7 #BB8E38 #38BB4C

split-complementary

#3865BB #BB4C38 #A7BB38

monochromatic

#1C325D #2A4C8C #3865BB #6187D0 #90ABDE

Accessibility & contrast

On white

5.60

#3865BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3865BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3865BB

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3865BB	#FFFFFF	#000000	##FFFFFF
##3865BB	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396EBE

Deuteranopia (green-blind)

#1E62B9

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3865bb;
/* rgb */ color: rgb(56, 101, 187);
/* oklch */ color: oklch(52.0% 0.144 261.9);

Tailwind

colors: {
  custom: {
    50: '#7e90d0',
    500: '#3865bb',
    950: '#000000',
  },
}

SCSS

$custom: #3865bb;
$custom-light: #7e90d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3865bb",
  "rgb": {
    "r": 56,
    "g": 101,
    "b": 187
  },
  "hsl": {
    "h": 219.389,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.52045,
    "c": 0.14438,
    "h": 261.9
  },
  "luminance": 0.13736
}

Semantic roles & 50–950 ramp

primary

#3865BB

secondary

#C8B286

accent

#AB4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3865BB

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

Preview Lab → · Contrast checker → · Palette generator →