#3665DB#3665DB

#3665DB is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.3% C 0.188 H 264.5°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3665DB
RGB	rgb(54, 101, 219)
HSL	hsl(223, 70%, 54%)
HSV	hsv(223, 75%, 86%)
CMYK	cmyk(75.3%, 53.9%, 0%, 14.1%)
CIE-LAB	lab(45.91, 25.27, -64.99)
CIE-LCH	lch(45.91, 69.73, 291.25°)
OKLab	oklab(54.28% -0.018 -0.1873)
OKLCH	oklch(54.28% 0.188 264.5)
XYZ	xyz(18.9567, 15.2040, 68.9397)
Luminance	0.1521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665DB #DBAC36

analogous

#36B7DB #3665DB #5936DB

triadic

#3665DB #DB3665 #65DB36

tetradic

#3665DB #DB36B7 #DBAC36 #36DB59

square

#3665DB #DB36B7 #DBAC36 #36DB59

split-complementary

#3665DB #DB5936 #B7DB36

monochromatic

#173580 #204AB4 #3665DB #6A8DE4 #9EB5EE

Accessibility & contrast

On white

5.20

#3665DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#3665DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665DB

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665DB	#FFFFFF	#000000	##FFFFFF
##3665DB	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075DF

Deuteranopia (green-blind)

#0065D9

Tritanopia (blue-blind)

#008296

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3665db;
/* rgb */ color: rgb(54, 101, 219);
/* oklch */ color: oklch(54.3% 0.188 264.5);

Tailwind

colors: {
  custom: {
    50: '#8490e7',
    500: '#3665db',
    950: '#000000',
  },
}

SCSS

$custom: #3665db;
$custom-light: #8490e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3665db",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 219
  },
  "hsl": {
    "h": 222.909,
    "s": 69.62,
    "l": 53.529
  },
  "oklch": {
    "l": 0.54278,
    "c": 0.18818,
    "h": 264.5
  },
  "luminance": 0.15206
}

Semantic roles & 50–950 ramp

primary

#3665DB

secondary

#DAC693

accent

#BA3BEC

background

#F8F8FE

surface

#F0F0FD

border

#CBCBD5

text

#0D0C16

muted

#7D7D84

Preview Lab

Preview with #3665DB

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

Preview Lab → · Contrast checker → · Palette generator →