#3865B7#3865B7

#3865B7 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.8% C 0.139 H 261.3°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#3865B7
RGB	rgb(56, 101, 183)
HSL	hsl(219, 53%, 47%)
HSV	hsv(219, 69%, 72%)
CMYK	cmyk(69.4%, 44.8%, 0%, 28.2%)
CIE-LAB	lab(43.60, 12.26, -47.99)
CIE-LCH	lch(43.60, 49.53, 284.33°)
OKLab	oklab(51.78% -0.021 -0.1373)
OKLCH	oklch(51.78% 0.139 261.3)
XYZ	xyz(14.8288, 13.5655, 46.6275)
Luminance	0.1357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3865B7 #B78A38

analogous

#38A5B7 #3865B7 #4B38B7

triadic

#3865B7 #B73865 #65B738

tetradic

#3865B7 #B738A5 #B78A38 #38B74B

square

#3865B7 #B738A5 #B78A38 #38B74B

split-complementary

#3865B7 #B74B38 #A5B738

monochromatic

#1B3159 #2A4B88 #3865B7 #5E86CE #8DA9DC

Accessibility & contrast

On white

5.66

#3865B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3865B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3865B7

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3865B7	#FFFFFF	#000000	##FFFFFF
##3865B7	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6DBA

Deuteranopia (green-blind)

#2562B5

Tritanopia (blue-blind)

#007885

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3865b7;
/* rgb */ color: rgb(56, 101, 183);
/* oklch */ color: oklch(51.8% 0.139 261.3);

Tailwind

colors: {
  custom: {
    50: '#7d90cd',
    500: '#3865b7',
    950: '#000000',
  },
}

SCSS

$custom: #3865b7;
$custom-light: #7d90cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3865b7",
  "rgb": {
    "r": 56,
    "g": 101,
    "b": 183
  },
  "hsl": {
    "h": 218.74,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.51776,
    "c": 0.13886,
    "h": 261.3
  },
  "luminance": 0.13567
}

Semantic roles & 50–950 ramp

primary

#3865B7

secondary

#C7AF84

accent

#A94BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3865B7

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

Preview Lab → · Contrast checker → · Palette generator →