#3540AA#3540AA

#3540AA is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.168 H 272.6°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#3540AA
RGB	rgb(53, 64, 170)
HSL	hsl(234, 52%, 44%)
HSV	hsv(234, 69%, 67%)
CMYK	cmyk(68.8%, 62.4%, 0%, 33.3%)
CIE-LAB	lab(32.54, 31.13, -58.21)
CIE-LCH	lch(32.54, 66.01, 298.13°)
OKLab	oklab(43.08% 0.0076 -0.1679)
OKLCH	oklch(43.08% 0.168 272.6)
XYZ	xyz(10.5549, 7.3250, 38.8800)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540AA #AA9F35

analogous

#357AAA #3540AA #6435AA

triadic

#3540AA #AA3540 #40AA35

tetradic

#3540AA #AA357A #AA9F35 #35AA64

square

#3540AA #AA357A #AA9F35 #35AA64

split-complementary

#3540AA #AA6435 #7AAA35

monochromatic

#181D4D #262E7B #3540AA #535EC9 #828AD8

Accessibility & contrast

On white

8.52

#3540AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3540AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540AA

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540AA	#FFFFFF	#000000	##FFFFFF
##3540AA	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AD

Deuteranopia (green-blind)

#0047A8

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3540aa;
/* rgb */ color: rgb(53, 64, 170);
/* oklch */ color: oklch(43.1% 0.168 272.6);

Tailwind

colors: {
  custom: {
    50: '#7b75c4',
    500: '#3540aa',
    950: '#000000',
  },
}

SCSS

$custom: #3540aa;
$custom-light: #7b75c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3540aa",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 170
  },
  "hsl": {
    "h": 234.359,
    "s": 52.466,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43082,
    "c": 0.16808,
    "h": 272.6
  },
  "luminance": 0.07326
}

Semantic roles & 50–950 ramp

primary

#3540AA

secondary

#C1BB7A

accent

#CE4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3540AA

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

Preview Lab → · Contrast checker → · Palette generator →