#3665B6#3665B6

#3665B6 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.6% C 0.138 H 260.5°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3665B6
RGB	rgb(54, 101, 182)
HSL	hsl(218, 54%, 46%)
HSV	hsv(218, 70%, 71%)
CMYK	cmyk(70.3%, 44.5%, 0%, 28.6%)
CIE-LAB	lab(43.46, 11.58, -47.64)
CIE-LCH	lch(43.46, 49.03, 283.67°)
OKLab	oklab(51.62% -0.0228 -0.1363)
OKLCH	oklch(51.62% 0.138 260.5)
XYZ	xyz(14.6155, 13.4675, 46.0761)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665B6 #B68736

analogous

#36A5B6 #3665B6 #4736B6

triadic

#3665B6 #B63665 #65B636

tetradic

#3665B6 #B636A5 #B68736 #36B647

square

#3665B6 #B636A5 #B68736 #36B647

split-complementary

#3665B6 #B64736 #A5B636

monochromatic

#1A3158 #284B87 #3665B6 #5B85CE #8AA8DC

Accessibility & contrast

On white

5.69

#3665B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3665B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665B6

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665B6	#FFFFFF	#000000	##FFFFFF
##3665B6	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6DB9

Deuteranopia (green-blind)

#2561B4

Tritanopia (blue-blind)

#007884

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3665b6;
/* rgb */ color: rgb(54, 101, 182);
/* oklch */ color: oklch(51.6% 0.138 260.5);

Tailwind

colors: {
  custom: {
    50: '#7c90cc',
    500: '#3665b6',
    950: '#000000',
  },
}

SCSS

$custom: #3665b6;
$custom-light: #7c90cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3665b6",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 182
  },
  "hsl": {
    "h": 217.969,
    "s": 54.237,
    "l": 46.275
  },
  "oklch": {
    "l": 0.51622,
    "c": 0.13815,
    "h": 260.5
  },
  "luminance": 0.13469
}

Semantic roles & 50–950 ramp

primary

#3665B6

secondary

#C6AD81

accent

#A74ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3665B6

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

Preview Lab → · Contrast checker → · Palette generator →