#3540AB#3540AB

#3540AB is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.169 H 272.6°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#3540AB
RGB	rgb(53, 64, 171)
HSL	hsl(234, 53%, 44%)
HSV	hsv(234, 69%, 67%)
CMYK	cmyk(69%, 62.6%, 0%, 32.9%)
CIE-LAB	lab(32.62, 31.48, -58.67)
CIE-LCH	lch(32.62, 66.58, 298.22°)
OKLab	oklab(43.17% 0.0076 -0.1693)
OKLCH	oklch(43.17% 0.169 272.6)
XYZ	xyz(10.6498, 7.3629, 39.3801)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.16

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540AB #ABA035

analogous

#357BAB #3540AB #6535AB

triadic

#3540AB #AB3540 #40AB35

tetradic

#3540AB #AB357B #ABA035 #35AB65

square

#3540AB #AB357B #ABA035 #35AB65

split-complementary

#3540AB #AB6535 #7BAB35

monochromatic

#181D4E #272F7C #3540AB #535ECA #828AD8

Accessibility & contrast

On white

8.49

#3540AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3540AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540AB

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540AB	#FFFFFF	#000000	##FFFFFF
##3540AB	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AE

Deuteranopia (green-blind)

#0047A9

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3540ab;
/* rgb */ color: rgb(53, 64, 171);
/* oklch */ color: oklch(43.2% 0.169 272.6);

Tailwind

colors: {
  custom: {
    50: '#7c75c5',
    500: '#3540ab',
    950: '#000000',
  },
}

SCSS

$custom: #3540ab;
$custom-light: #7c75c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3540ab",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 171
  },
  "hsl": {
    "h": 234.407,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.4317,
    "c": 0.16943,
    "h": 272.6
  },
  "luminance": 0.07364
}

Semantic roles & 50–950 ramp

primary

#3540AB

secondary

#C2BB7A

accent

#CF4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3540AB

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

Preview Lab → · Contrast checker → · Palette generator →