#3665C5#3665C5

#3665C5 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.7% C 0.159 H 262.6°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3665C5
RGB	rgb(54, 101, 197)
HSL	hsl(220, 57%, 49%)
HSV	hsv(220, 73%, 77%)
CMYK	cmyk(72.6%, 48.7%, 0%, 22.7%)
CIE-LAB	lab(44.41, 17.13, -54.82)
CIE-LCH	lch(44.41, 57.44, 287.35°)
OKLab	oklab(52.65% -0.0204 -0.1574)
OKLCH	oklch(52.65% 0.159 262.6)
XYZ	xyz(16.2495, 14.1211, 54.6818)
Luminance	0.1412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665C5 #C59636

analogous

#36ADC5 #3665C5 #4F36C5

triadic

#3665C5 #C53665 #65C536

tetradic

#3665C5 #C536AD #C59636 #36C54F

square

#3665C5 #C536AD #C59636 #36C54F

split-complementary

#3665C5 #C54F36 #ADC536

monochromatic

#1C3465 #294C95 #3665C5 #6489D4 #94ADE2

Accessibility & contrast

On white

5.49

#3665C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3665C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665C5

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665C5	#FFFFFF	#000000	##FFFFFF
##3665C5	1.00	5.49	3.82	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F70C9

Deuteranopia (green-blind)

#0063C3

Tritanopia (blue-blind)

#007C8B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3665c5;
/* rgb */ color: rgb(54, 101, 197);
/* oklch */ color: oklch(52.7% 0.159 262.6);

Tailwind

colors: {
  custom: {
    50: '#7f90d7',
    500: '#3665c5',
    950: '#000000',
  },
}

SCSS

$custom: #3665c5;
$custom-light: #7f90d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3665c5",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 197
  },
  "hsl": {
    "h": 220.28,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.52654,
    "c": 0.15872,
    "h": 262.6
  },
  "luminance": 0.14123
}

Semantic roles & 50–950 ramp

primary

#3665C5

secondary

#CDB78A

accent

#AE48E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3665C5

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

Preview Lab → · Contrast checker → · Palette generator →