#3866C8#3866C8

#3866C8 is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.2% C 0.161 H 263.1°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#3866C8
RGB	rgb(56, 102, 200)
HSL	hsl(221, 57%, 50%)
HSV	hsv(221, 72%, 78%)
CMYK	cmyk(72%, 49%, 0%, 21.6%)
CIE-LAB	lab(44.96, 17.87, -55.66)
CIE-LCH	lch(44.96, 58.46, 287.80°)
OKLab	oklab(53.16% -0.0193 -0.1598)
OKLCH	oklch(53.16% 0.161 263.1)
XYZ	xyz(16.8039, 14.5118, 56.5478)
Luminance	0.1451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3866C8 #C89A38

analogous

#38AEC8 #3866C8 #5238C8

triadic

#3866C8 #C83866 #66C838

tetradic

#3866C8 #C838AE #C89A38 #38C852

square

#3866C8 #C838AE #C89A38 #38C852

split-complementary

#3866C8 #C85238 #AEC838

monochromatic

#1D3569 #2A4D99 #3866C8 #688BD5 #98B0E3

Accessibility & contrast

On white

5.38

#3866C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#3866C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866C8

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3866C8	#FFFFFF	#000000	##FFFFFF
##3866C8	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E71CC

Deuteranopia (green-blind)

#0064C6

Tritanopia (blue-blind)

#007D8D

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3866c8;
/* rgb */ color: rgb(56, 102, 200);
/* oklch */ color: oklch(53.2% 0.161 263.1);

Tailwind

colors: {
  custom: {
    50: '#8191d9',
    500: '#3866c8',
    950: '#000000',
  },
}

SCSS

$custom: #3866c8;
$custom-light: #8191d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3866c8",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 200
  },
  "hsl": {
    "h": 220.833,
    "s": 56.693,
    "l": 50.196
  },
  "oklch": {
    "l": 0.53161,
    "c": 0.16098,
    "h": 263.1
  },
  "luminance": 0.14514
}

Semantic roles & 50–950 ramp

primary

#3866C8

secondary

#CEBA8E

accent

#AF48E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3866C8

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

Preview Lab → · Contrast checker → · Palette generator →