#3648A9#3648A9

#3648A9 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.6% C 0.156 H 270.8°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#3648A9
RGB	rgb(54, 72, 169)
HSL	hsl(231, 52%, 44%)
HSV	hsv(231, 68%, 66%)
CMYK	cmyk(68%, 57.4%, 0%, 33.7%)
CIE-LAB	lab(34.56, 25.70, -54.30)
CIE-LCH	lch(34.56, 60.08, 295.32°)
OKLab	oklab(44.58% 0.0021 -0.1563)
OKLCH	oklch(44.58% 0.156 270.8)
XYZ	xyz(10.9977, 8.2825, 38.5475)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3648A9 #A99736

analogous

#3681A9 #3648A9 #5D36A9

triadic

#3648A9 #A93648 #48A936

tetradic

#3648A9 #A93681 #A99736 #36A95D

square

#3648A9 #A93681 #A99736 #36A95D

split-complementary

#3648A9 #A95D36 #81A936

monochromatic

#18204C #27347B #3648A9 #5466C8 #8290D7

Accessibility & contrast

On white

7.90

#3648A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3648A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3648A9

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3648A9	#FFFFFF	#000000	##FFFFFF
##3648A9	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AC

Deuteranopia (green-blind)

#004CA7

Tritanopia (blue-blind)

#006071

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3648a9;
/* rgb */ color: rgb(54, 72, 169);
/* oklch */ color: oklch(44.6% 0.156 270.8);

Tailwind

colors: {
  custom: {
    50: '#7b7ac3',
    500: '#3648a9',
    950: '#000000',
  },
}

SCSS

$custom: #3648a9;
$custom-light: #7b7ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#3648a9",
  "rgb": {
    "r": 54,
    "g": 72,
    "b": 169
  },
  "hsl": {
    "h": 230.609,
    "s": 51.57,
    "l": 43.725
  },
  "oklch": {
    "l": 0.44579,
    "c": 0.15634,
    "h": 270.8
  },
  "luminance": 0.08284
}

Semantic roles & 50–950 ramp

primary

#3648A9

secondary

#C1B67A

accent

#C54DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #3648A9

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

Preview Lab → · Contrast checker → · Palette generator →