#3866BE#3866BE

#3866BE is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.147 H 261.9°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3866BE
RGB	rgb(56, 102, 190)
HSL	hsl(219, 54%, 48%)
HSV	hsv(219, 71%, 75%)
CMYK	cmyk(70.5%, 46.3%, 0%, 25.5%)
CIE-LAB	lab(44.32, 14.19, -50.91)
CIE-LCH	lch(44.32, 52.85, 285.58°)
OKLab	oklab(52.47% -0.0207 -0.1458)
OKLCH	oklch(52.47% 0.147 261.9)
XYZ	xyz(15.6732, 14.0596, 50.5930)
Luminance	0.1406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3866BE #BE9038

analogous

#38A9BE #3866BE #4D38BE

triadic

#3866BE #BE3866 #66BE38

tetradic

#3866BE #BE38A9 #BE9038 #38BE4D

square

#3866BE #BE38A9 #BE9038 #38BE4D

split-complementary

#3866BE #BE4D38 #A9BE38

monochromatic

#1C335F #2A4D8F #3866BE #6288D1 #92ACDF

Accessibility & contrast

On white

5.51

#3866BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3866BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866BE

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3866BE	#FFFFFF	#000000	##FFFFFF
##3866BE	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396FC1

Deuteranopia (green-blind)

#1C63BC

Tritanopia (blue-blind)

#007B89

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3866be;
/* rgb */ color: rgb(56, 102, 190);
/* oklch */ color: oklch(52.5% 0.147 261.9);

Tailwind

colors: {
  custom: {
    50: '#7f91d2',
    500: '#3866be',
    950: '#000000',
  },
}

SCSS

$custom: #3866be;
$custom-light: #7f91d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3866be",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 190
  },
  "hsl": {
    "h": 219.403,
    "s": 54.472,
    "l": 48.235
  },
  "oklch": {
    "l": 0.52465,
    "c": 0.14731,
    "h": 261.9
  },
  "luminance": 0.14061
}

Semantic roles & 50–950 ramp

primary

#3866BE

secondary

#CAB388

accent

#AB4ADE

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3866BE

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

Preview Lab → · Contrast checker → · Palette generator →