#3663AE#3663AE

#3663AE is a mid, vivid blue. Relative luminance 0.128; OKLCH L 50.7% C 0.129 H 260.0°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#3663AE
RGB	rgb(54, 99, 174)
HSL	hsl(218, 53%, 45%)
HSV	hsv(218, 69%, 68%)
CMYK	cmyk(69%, 43.1%, 0%, 31.8%)
CIE-LAB	lab(42.40, 9.91, -44.64)
CIE-LCH	lch(42.40, 45.73, 282.52°)
OKLab	oklab(50.65% -0.0224 -0.1275)
OKLCH	oklch(50.65% 0.129 260)
XYZ	xyz(13.6204, 12.7626, 41.7818)
Luminance	0.1276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3663AE #AE8136

analogous

#369FAE #3663AE #4536AE

triadic

#3663AE #AE3663 #63AE36

tetradic

#3663AE #AE369F #AE8136 #36AE45

square

#3663AE #AE369F #AE8136 #36AE45

split-complementary

#3663AE #AE4536 #9FAE36

monochromatic

#192E51 #28487F #3663AE #5682CB #85A5D9

Accessibility & contrast

On white

5.91

#3663AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#3663AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663AE

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3663AE	#FFFFFF	#000000	##FFFFFF
##3663AE	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6AB1

Deuteranopia (green-blind)

#2B5FAC

Tritanopia (blue-blind)

#007480

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3663ae;
/* rgb */ color: rgb(54, 99, 174);
/* oklch */ color: oklch(50.7% 0.129 260.0);

Tailwind

colors: {
  custom: {
    50: '#7b8ec6',
    500: '#3663ae',
    950: '#000000',
  },
}

SCSS

$custom: #3663ae;
$custom-light: #7b8ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3663ae",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 174
  },
  "hsl": {
    "h": 217.5,
    "s": 52.632,
    "l": 44.706
  },
  "oklch": {
    "l": 0.50652,
    "c": 0.12945,
    "h": 260
  },
  "luminance": 0.12764
}

Semantic roles & 50–950 ramp

primary

#3663AE

secondary

#C3A97D

accent

#A64CDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3663AE

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

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