#3648AB#3648AB

#3648AB is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.7% C 0.159 H 270.8°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#3648AB
RGB	rgb(54, 72, 171)
HSL	hsl(231, 52%, 44%)
HSV	hsv(231, 68%, 67%)
CMYK	cmyk(68.4%, 57.9%, 0%, 32.9%)
CIE-LAB	lab(34.72, 26.42, -55.25)
CIE-LCH	lch(34.72, 61.24, 295.56°)
OKLab	oklab(44.74% 0.0021 -0.1591)
OKLCH	oklch(44.74% 0.159 270.8)
XYZ	xyz(11.1869, 8.3582, 39.5439)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3648AB #AB9936

analogous

#3683AB #3648AB #5F36AB

triadic

#3648AB #AB3648 #48AB36

tetradic

#3648AB #AB3683 #AB9936 #36AB5F

square

#3648AB #AB3683 #AB9936 #36AB5F

split-complementary

#3648AB #AB5F36 #83AB36

monochromatic

#19214E #27347C #3648AB #5567C9 #8390D8

Accessibility & contrast

On white

7.86

#3648AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3648AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3648AB

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3648AB	#FFFFFF	#000000	##FFFFFF
##3648AB	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AE

Deuteranopia (green-blind)

#004CA9

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3648ab;
/* rgb */ color: rgb(54, 72, 171);
/* oklch */ color: oklch(44.7% 0.159 270.8);

Tailwind

colors: {
  custom: {
    50: '#7b7ac5',
    500: '#3648ab',
    950: '#000000',
  },
}

SCSS

$custom: #3648ab;
$custom-light: #7b7ac5;
$custom-dark: #000000;

JSON

{
  "hex": "#3648ab",
  "rgb": {
    "r": 54,
    "g": 72,
    "b": 171
  },
  "hsl": {
    "h": 230.769,
    "s": 52,
    "l": 44.118
  },
  "oklch": {
    "l": 0.44742,
    "c": 0.15911,
    "h": 270.8
  },
  "luminance": 0.08359
}

Semantic roles & 50–950 ramp

primary

#3648AB

secondary

#C2B77B

accent

#C54CDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3648AB

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

Preview Lab → · Contrast checker → · Palette generator →