#3865B9#3865B9

#3865B9 is a mid, vivid blue. Relative luminance 0.137; OKLCH L 51.9% C 0.142 H 261.6°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#3865B9
RGB	rgb(56, 101, 185)
HSL	hsl(219, 54%, 47%)
HSV	hsv(219, 70%, 73%)
CMYK	cmyk(69.7%, 45.4%, 0%, 27.5%)
CIE-LAB	lab(43.73, 12.99, -48.96)
CIE-LCH	lch(43.73, 50.65, 284.86°)
OKLab	oklab(51.91% -0.0207 -0.1401)
OKLCH	oklch(51.91% 0.142 261.6)
XYZ	xyz(15.0384, 13.6493, 47.7316)
Luminance	0.1365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3865B9 #B98C38

analogous

#38A5B9 #3865B9 #4C38B9

triadic

#3865B9 #B93865 #65B938

tetradic

#3865B9 #B938A5 #B98C38 #38B94C

square

#3865B9 #B938A5 #B98C38 #38B94C

split-complementary

#3865B9 #B94C38 #A5B938

monochromatic

#1C325B #2A4B8A #3865B9 #5F86CF #8EAADD

Accessibility & contrast

On white

5.63

#3865B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#3865B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3865B9

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3865B9	#FFFFFF	#000000	##FFFFFF
##3865B9	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6EBC

Deuteranopia (green-blind)

#2262B7

Tritanopia (blue-blind)

#007986

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3865b9;
/* rgb */ color: rgb(56, 101, 185);
/* oklch */ color: oklch(51.9% 0.142 261.6);

Tailwind

colors: {
  custom: {
    50: '#7e90ce',
    500: '#3865b9',
    950: '#000000',
  },
}

SCSS

$custom: #3865b9;
$custom-light: #7e90ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3865b9",
  "rgb": {
    "r": 56,
    "g": 101,
    "b": 185
  },
  "hsl": {
    "h": 219.07,
    "s": 53.527,
    "l": 47.255
  },
  "oklch": {
    "l": 0.5191,
    "c": 0.14163,
    "h": 261.6
  },
  "luminance": 0.13651
}

Semantic roles & 50–950 ramp

primary

#3865B9

secondary

#C8B085

accent

#AA4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3865B9

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

Preview Lab → · Contrast checker → · Palette generator →