#3663AF#3663AF

#3663AF is a mid, vivid blue. Relative luminance 0.128; OKLCH L 50.7% C 0.131 H 260.2°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#3663AF
RGB	rgb(54, 99, 175)
HSL	hsl(218, 53%, 45%)
HSV	hsv(218, 69%, 69%)
CMYK	cmyk(69.1%, 43.4%, 0%, 31.4%)
CIE-LAB	lab(42.46, 10.28, -45.13)
CIE-LCH	lch(42.46, 46.29, 282.83°)
OKLab	oklab(50.72% -0.0222 -0.1289)
OKLCH	oklch(50.72% 0.131 260.2)
XYZ	xyz(13.7183, 12.8017, 42.2971)
Luminance	0.1280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3663AF #AF8236

analogous

#369FAF #3663AF #4636AF

triadic

#3663AF #AF3663 #63AF36

tetradic

#3663AF #AF369F #AF8236 #36AF46

square

#3663AF #AF369F #AF8236 #36AF46

split-complementary

#3663AF #AF4636 #9FAF36

monochromatic

#192E51 #284980 #3663AF #5782CB #86A5DA

Accessibility & contrast

On white

5.90

#3663AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#3663AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663AF

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3663AF	#FFFFFF	#000000	##FFFFFF
##3663AF	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6AB2

Deuteranopia (green-blind)

#2A5FAD

Tritanopia (blue-blind)

#007580

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3663af;
/* rgb */ color: rgb(54, 99, 175);
/* oklch */ color: oklch(50.7% 0.131 260.2);

Tailwind

colors: {
  custom: {
    50: '#7b8ec7',
    500: '#3663af',
    950: '#000000',
  },
}

SCSS

$custom: #3663af;
$custom-light: #7b8ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#3663af",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 175
  },
  "hsl": {
    "h": 217.686,
    "s": 52.838,
    "l": 44.902
  },
  "oklch": {
    "l": 0.50717,
    "c": 0.13084,
    "h": 260.2
  },
  "luminance": 0.12803
}

Semantic roles & 50–950 ramp

primary

#3663AF

secondary

#C3A97D

accent

#A64CDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3663AF

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

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