#3866C0#3866C0

#3866C0 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.6% C 0.150 H 262.2°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3866C0
RGB	rgb(56, 102, 192)
HSL	hsl(220, 55%, 49%)
HSV	hsv(220, 71%, 75%)
CMYK	cmyk(70.8%, 46.9%, 0%, 24.7%)
CIE-LAB	lab(44.44, 14.93, -51.87)
CIE-LCH	lch(44.44, 53.97, 286.06°)
OKLab	oklab(52.6% -0.0204 -0.1487)
OKLCH	oklch(52.6% 0.15 262.2)
XYZ	xyz(15.8933, 14.1476, 51.7521)
Luminance	0.1415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3866C0 #C09238

analogous

#38AAC0 #3866C0 #4E38C0

triadic

#3866C0 #C03866 #66C038

tetradic

#3866C0 #C038AA #C09238 #38C04E

square

#3866C0 #C038AA #C09238 #38C04E

split-complementary

#3866C0 #C04E38 #AAC038

monochromatic

#1C3461 #2A4D91 #3866C0 #6489D2 #93ADDF

Accessibility & contrast

On white

5.48

#3866C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3866C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866C0

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3866C0	#FFFFFF	#000000	##FFFFFF
##3866C0	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3770C3

Deuteranopia (green-blind)

#1763BE

Tritanopia (blue-blind)

#007B8A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3866c0;
/* rgb */ color: rgb(56, 102, 192);
/* oklch */ color: oklch(52.6% 0.150 262.2);

Tailwind

colors: {
  custom: {
    50: '#7f91d3',
    500: '#3866c0',
    950: '#000000',
  },
}

SCSS

$custom: #3866c0;
$custom-light: #7f91d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3866c0",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 192
  },
  "hsl": {
    "h": 219.706,
    "s": 54.839,
    "l": 48.627
  },
  "oklch": {
    "l": 0.52602,
    "c": 0.15006,
    "h": 262.2
  },
  "luminance": 0.14149
}

Semantic roles & 50–950 ramp

primary

#3866C0

secondary

#CBB489

accent

#AC4ADE

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3866C0

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

Preview Lab → · Contrast checker → · Palette generator →