#3663DB#3663DB

#3663DB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.9% C 0.191 H 265.0°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#3663DB
RGB	rgb(54, 99, 219)
HSL	hsl(224, 70%, 54%)
HSV	hsv(224, 75%, 86%)
CMYK	cmyk(75.3%, 54.8%, 0%, 14.1%)
CIE-LAB	lab(45.39, 26.54, -65.85)
CIE-LCH	lch(45.39, 70.99, 291.95°)
OKLab	oklab(53.88% -0.0166 -0.1899)
OKLCH	oklch(53.88% 0.191 265)
XYZ	xyz(18.7648, 14.8203, 68.8757)
Luminance	0.1482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3663DB #DBAE36

analogous

#36B6DB #3663DB #5B36DB

triadic

#3663DB #DB3663 #63DB36

tetradic

#3663DB #DB36B6 #DBAE36 #36DB5B

square

#3663DB #DB36B6 #DBAE36 #36DB5B

split-complementary

#3663DB #DB5B36 #B6DB36

monochromatic

#173380 #2048B4 #3663DB #6A8BE4 #9EB4EE

Accessibility & contrast

On white

5.30

#3663DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3663DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663DB

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3663DB	#FFFFFF	#000000	##FFFFFF
##3663DB	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)

#0073DF

Deuteranopia (green-blind)

#0064D9

Tritanopia (blue-blind)

#008195

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3663db;
/* rgb */ color: rgb(54, 99, 219);
/* oklch */ color: oklch(53.9% 0.191 265.0);

Tailwind

colors: {
  custom: {
    50: '#848ee7',
    500: '#3663db',
    950: '#000000',
  },
}

SCSS

$custom: #3663db;
$custom-light: #848ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#3663db",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 219
  },
  "hsl": {
    "h": 223.636,
    "s": 69.62,
    "l": 53.529
  },
  "oklch": {
    "l": 0.53882,
    "c": 0.19058,
    "h": 265
  },
  "luminance": 0.14822
}

Semantic roles & 50–950 ramp

primary

#3663DB

secondary

#DAC693

accent

#BC3BEC

background

#F8F8FE

surface

#F0F0FD

border

#CBCBD5

text

#0D0C16

muted

#7D7D84

Preview Lab

Preview with #3663DB

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

Preview Lab → · Contrast checker → · Palette generator →