#3663CD#3663CD

#3663CD is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.8% C 0.172 H 264.1°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3663CD
RGB	rgb(54, 99, 205)
HSL	hsl(222, 60%, 51%)
HSV	hsv(222, 74%, 80%)
CMYK	cmyk(73.7%, 51.7%, 0%, 19.6%)
CIE-LAB	lab(44.40, 21.38, -59.45)
CIE-LCH	lch(44.40, 63.18, 289.78°)
OKLab	oklab(52.82% -0.0178 -0.171)
OKLCH	oklch(52.82% 0.172 264.1)
XYZ	xyz(16.9987, 14.1139, 59.5741)
Luminance	0.1412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3663CD #CDA036

analogous

#36AECD #3663CD #5436CD

triadic

#3663CD #CD3663 #63CD36

tetradic

#3663CD #CD36AE #CDA036 #36CD54

square

#3663CD #CD36AE #CDA036 #36CD54

split-complementary

#3663CD #CD5436 #AECD36

monochromatic

#1B346D #274B9E #3663CD #6789D9 #98AFE5

Accessibility & contrast

On white

5.49

#3663CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3663CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663CD

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

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

#1C70D1

Deuteranopia (green-blind)

#0062CB

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3663cd;
/* rgb */ color: rgb(54, 99, 205);
/* oklch */ color: oklch(52.8% 0.172 264.1);

Tailwind

colors: {
  custom: {
    50: '#818edd',
    500: '#3663cd',
    950: '#000000',
  },
}

SCSS

$custom: #3663cd;
$custom-light: #818edd;
$custom-dark: #000000;

JSON

{
  "hex": "#3663cd",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 205
  },
  "hsl": {
    "h": 222.119,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52817,
    "c": 0.17197,
    "h": 264.1
  },
  "luminance": 0.14116
}

Semantic roles & 50–950 ramp

primary

#3663CD

secondary

#D1BD8E

accent

#B444E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3663CD

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

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