#3665C7#3665C7

#3665C7 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.8% C 0.161 H 262.8°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3665C7
RGB	rgb(54, 101, 199)
HSL	hsl(221, 57%, 50%)
HSV	hsv(221, 73%, 78%)
CMYK	cmyk(72.9%, 49.2%, 0%, 22%)
CIE-LAB	lab(44.54, 17.87, -55.77)
CIE-LCH	lch(44.54, 58.56, 287.77°)
OKLab	oklab(52.8% -0.0201 -0.1602)
OKLCH	oklch(52.8% 0.161 262.8)
XYZ	xyz(16.4801, 14.2134, 55.8967)
Luminance	0.1421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665C7 #C79836

analogous

#36ADC7 #3665C7 #5036C7

triadic

#3665C7 #C73665 #65C736

tetradic

#3665C7 #C736AD #C79836 #36C750

square

#3665C7 #C736AD #C79836 #36C750

split-complementary

#3665C7 #C75036 #ADC736

monochromatic

#1C3467 #294D97 #3665C7 #6589D5 #95AEE2

Accessibility & contrast

On white

5.46

#3665C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#3665C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665C7

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665C7	#FFFFFF	#000000	##FFFFFF
##3665C7	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C70CB

Deuteranopia (green-blind)

#0063C5

Tritanopia (blue-blind)

#007C8C

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3665c7;
/* rgb */ color: rgb(54, 101, 199);
/* oklch */ color: oklch(52.8% 0.161 262.8);

Tailwind

colors: {
  custom: {
    50: '#8090d9',
    500: '#3665c7',
    950: '#000000',
  },
}

SCSS

$custom: #3665c7;
$custom-light: #8090d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3665c7",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 199
  },
  "hsl": {
    "h": 220.552,
    "s": 57.312,
    "l": 49.608
  },
  "oklch": {
    "l": 0.52796,
    "c": 0.16144,
    "h": 262.8
  },
  "luminance": 0.14215
}

Semantic roles & 50–950 ramp

primary

#3665C7

secondary

#CEB88B

accent

#AF47E1

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3665C7

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

Preview Lab → · Contrast checker → · Palette generator →