#3648A8#3648A8

#3648A8 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.5% C 0.155 H 270.7°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#3648A8
RGB	rgb(54, 72, 168)
HSL	hsl(231, 51%, 44%)
HSV	hsv(231, 68%, 66%)
CMYK	cmyk(67.9%, 57.1%, 0%, 34.1%)
CIE-LAB	lab(34.49, 25.33, -53.83)
CIE-LCH	lch(34.49, 59.49, 295.20°)
OKLab	oklab(44.5% 0.002 -0.1549)
OKLCH	oklch(44.5% 0.155 270.7)
XYZ	xyz(10.9042, 8.2451, 38.0550)
Luminance	0.0825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3648A8 #A89636

analogous

#3681A8 #3648A8 #5D36A8

triadic

#3648A8 #A83648 #48A836

tetradic

#3648A8 #A83681 #A89636 #36A85D

square

#3648A8 #A83681 #A89636 #36A85D

split-complementary

#3648A8 #A85D36 #81A836

monochromatic

#18204B #27347A #3648A8 #5366C8 #828FD7

Accessibility & contrast

On white

7.93

#3648A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3648A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3648A8

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3648A8	#FFFFFF	#000000	##FFFFFF
##3648A8	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AB

Deuteranopia (green-blind)

#004CA6

Tritanopia (blue-blind)

#005F71

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3648a8;
/* rgb */ color: rgb(54, 72, 168);
/* oklch */ color: oklch(44.5% 0.155 270.7);

Tailwind

colors: {
  custom: {
    50: '#7b7ac3',
    500: '#3648a8',
    950: '#000000',
  },
}

SCSS

$custom: #3648a8;
$custom-light: #7b7ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#3648a8",
  "rgb": {
    "r": 54,
    "g": 72,
    "b": 168
  },
  "hsl": {
    "h": 230.526,
    "s": 51.351,
    "l": 43.529
  },
  "oklch": {
    "l": 0.44497,
    "c": 0.15494,
    "h": 270.7
  },
  "luminance": 0.08246
}

Semantic roles & 50–950 ramp

primary

#3648A8

secondary

#C0B57A

accent

#C44DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #3648A8

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

Preview Lab → · Contrast checker → · Palette generator →