#3665C8#3665C8

#3665C8 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.9% C 0.163 H 263.0°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#3665C8
RGB	rgb(54, 101, 200)
HSL	hsl(221, 57%, 50%)
HSV	hsv(221, 73%, 78%)
CMYK	cmyk(73%, 49.5%, 0%, 21.6%)
CIE-LAB	lab(44.60, 18.24, -56.24)
CIE-LCH	lch(44.60, 59.12, 287.97°)
OKLab	oklab(52.87% -0.02 -0.1616)
OKLCH	oklch(52.87% 0.163 263)
XYZ	xyz(16.5966, 14.2600, 56.5102)
Luminance	0.1426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665C8 #C89936

analogous

#36AEC8 #3665C8 #5036C8

triadic

#3665C8 #C83665 #65C836

tetradic

#3665C8 #C836AE #C89936 #36C850

square

#3665C8 #C836AE #C89936 #36C850

split-complementary

#3665C8 #C85036 #AEC836

monochromatic

#1C3468 #294D98 #3665C8 #668AD6 #96AFE3

Accessibility & contrast

On white

5.45

#3665C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#3665C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665C8

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665C8	#FFFFFF	#000000	##FFFFFF
##3665C8	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B71CC

Deuteranopia (green-blind)

#0063C6

Tritanopia (blue-blind)

#007D8D

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3665c8;
/* rgb */ color: rgb(54, 101, 200);
/* oklch */ color: oklch(52.9% 0.163 263.0);

Tailwind

colors: {
  custom: {
    50: '#8090d9',
    500: '#3665c8',
    950: '#000000',
  },
}

SCSS

$custom: #3665c8;
$custom-light: #8090d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3665c8",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 200
  },
  "hsl": {
    "h": 220.685,
    "s": 57.48,
    "l": 49.804
  },
  "oklch": {
    "l": 0.52868,
    "c": 0.16279,
    "h": 263
  },
  "luminance": 0.14262
}

Semantic roles & 50–950 ramp

primary

#3665C8

secondary

#CEB98C

accent

#AF47E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3665C8

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

Preview Lab → · Contrast checker → · Palette generator →