#3866D5#3866D5

#3866D5 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.1% C 0.178 H 264.3°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3866D5
RGB	rgb(56, 102, 213)
HSL	hsl(222, 65%, 53%)
HSV	hsv(222, 74%, 84%)
CMYK	cmyk(73.7%, 52.1%, 0%, 16.5%)
CIE-LAB	lab(45.83, 22.66, -61.70)
CIE-LCH	lch(45.83, 65.73, 290.17°)
OKLab	oklab(54.11% -0.0178 -0.1776)
OKLCH	oklch(54.11% 0.178 264.3)
XYZ	xyz(18.3882, 15.1456, 64.8922)
Luminance	0.1515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3866D5 #D5A738

analogous

#38B5D5 #3866D5 #5838D5

triadic

#3866D5 #D53866 #66D538

tetradic

#3866D5 #D538B5 #D5A738 #38D558

square

#3866D5 #D538B5 #D5A738 #38D558

split-complementary

#3866D5 #D55838 #B5D538

monochromatic

#1A3679 #244CAC #3866D5 #6B8DE0 #9DB4EA

Accessibility & contrast

On white

5.21

#3866D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#3866D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866D5

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3866D5	#FFFFFF	#000000	##FFFFFF
##3866D5	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1974D9

Deuteranopia (green-blind)

#0066D3

Tritanopia (blue-blind)

#008194

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3866d5;
/* rgb */ color: rgb(56, 102, 213);
/* oklch */ color: oklch(54.1% 0.178 264.3);

Tailwind

colors: {
  custom: {
    50: '#8391e3',
    500: '#3866d5',
    950: '#000000',
  },
}

SCSS

$custom: #3866d5;
$custom-light: #8391e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3866d5",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 213
  },
  "hsl": {
    "h": 222.42,
    "s": 65.145,
    "l": 52.745
  },
  "oklch": {
    "l": 0.54106,
    "c": 0.17848,
    "h": 264.3
  },
  "luminance": 0.15148
}

Semantic roles & 50–950 ramp

primary

#3866D5

secondary

#D6C292

accent

#B740E8

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0C0C15

muted

#7D7D84

Preview Lab

Preview with #3866D5

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

Preview Lab → · Contrast checker → · Palette generator →