#3866AA#3866AA

#3866AA is a mid, moderate blue. Relative luminance 0.132; OKLCH L 51.2% C 0.120 H 258.1°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3866AA
RGB	rgb(56, 102, 170)
HSL	hsl(216, 50%, 44%)
HSV	hsv(216, 67%, 67%)
CMYK	cmyk(67.1%, 40%, 0%, 33.3%)
CIE-LAB	lab(43.13, 6.88, -41.13)
CIE-LCH	lch(43.13, 41.70, 279.49°)
OKLab	oklab(51.16% -0.0247 -0.1171)
OKLCH	oklch(51.16% 0.12 258.1)
XYZ	xyz(13.6353, 13.2444, 39.8603)
Luminance	0.1325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3866AA #AA7C38

analogous

#389FAA #3866AA #4338AA

triadic

#3866AA #AA3866 #66AA38

tetradic

#3866AA #AA389F #AA7C38 #38AA43

square

#3866AA #AA389F #AA7C38 #38AA43

split-complementary

#3866AA #AA4338 #9FAA38

monochromatic

#1A2F4E #294A7C #3866AA #5785C8 #85A6D7

Accessibility & contrast

On white

5.75

#3866AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3866AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866AA

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3866AA	#FFFFFF	#000000	##FFFFFF
##3866AA	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#476CAD

Deuteranopia (green-blind)

#3661A9

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3866aa;
/* rgb */ color: rgb(56, 102, 170);
/* oklch */ color: oklch(51.2% 0.120 258.1);

Tailwind

colors: {
  custom: {
    50: '#7b91c4',
    500: '#3866aa',
    950: '#000000',
  },
}

SCSS

$custom: #3866aa;
$custom-light: #7b91c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3866aa",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 170
  },
  "hsl": {
    "h": 215.789,
    "s": 50.442,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51162,
    "c": 0.11967,
    "h": 258.1
  },
  "luminance": 0.13246
}

Semantic roles & 50–950 ramp

primary

#3866AA

secondary

#C1A57D

accent

#A14EDA

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #3866AA

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

Preview Lab → · Contrast checker → · Palette generator →