#3665D3#3665D3

#3665D3 is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.7% C 0.178 H 263.9°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#3665D3
RGB	rgb(54, 101, 211)
HSL	hsl(222, 64%, 52%)
HSV	hsv(222, 74%, 83%)
CMYK	cmyk(74.4%, 52.1%, 0%, 17.3%)
CIE-LAB	lab(45.35, 22.32, -61.34)
CIE-LCH	lch(45.35, 65.28, 289.99°)
OKLab	oklab(53.67% -0.0187 -0.1766)
OKLCH	oklch(53.67% 0.178 263.9)
XYZ	xyz(17.9287, 14.7928, 63.5258)
Luminance	0.1479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665D3 #D3A436

analogous

#36B4D3 #3665D3 #5536D3

triadic

#3665D3 #D33665 #65D336

tetradic

#3665D3 #D336B4 #D3A436 #36D355

square

#3665D3 #D336B4 #D3A436 #36D355

split-complementary

#3665D3 #D35536 #B4D336

monochromatic

#1A3575 #254CA7 #3665D3 #688BDE #9AB2E9

Accessibility & contrast

On white

5.30

#3665D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3665D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665D3

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665D3	#FFFFFF	#000000	##FFFFFF
##3665D3	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1873D7

Deuteranopia (green-blind)

#0064D1

Tritanopia (blue-blind)

#008092

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3665d3;
/* rgb */ color: rgb(54, 101, 211);
/* oklch */ color: oklch(53.7% 0.178 263.9);

Tailwind

colors: {
  custom: {
    50: '#8290e1',
    500: '#3665d3',
    950: '#000000',
  },
}

SCSS

$custom: #3665d3;
$custom-light: #8290e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3665d3",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 211
  },
  "hsl": {
    "h": 222.038,
    "s": 64.082,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53673,
    "c": 0.17758,
    "h": 263.9
  },
  "luminance": 0.14795
}

Semantic roles & 50–950 ramp

primary

#3665D3

secondary

#D5C090

accent

#B541E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3665D3

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

Preview Lab → · Contrast checker → · Palette generator →