#3540B0#3540B0

#3540B0 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.6% C 0.176 H 272.4°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#3540B0
RGB	rgb(53, 64, 176)
HSL	hsl(235, 54%, 45%)
HSV	hsv(235, 70%, 69%)
CMYK	cmyk(69.9%, 63.6%, 0%, 31%)
CIE-LAB	lab(33.04, 33.27, -60.96)
CIE-LCH	lch(33.04, 69.44, 298.62°)
OKLab	oklab(43.61% 0.0073 -0.176)
OKLCH	oklch(43.61% 0.176 272.4)
XYZ	xyz(11.1354, 7.5572, 41.9377)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.62

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540B0 #B0A535

analogous

#357EB0 #3540B0 #6735B0

triadic

#3540B0 #B03540 #40B035

tetradic

#3540B0 #B0357E #B0A535 #35B067

square

#3540B0 #B0357E #B0A535 #35B067

split-complementary

#3540B0 #B06735 #7EB035

monochromatic

#191E52 #272F81 #3540B0 #5661CC #858DDA

Accessibility & contrast

On white

8.36

#3540B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3540B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540B0

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540B0	#FFFFFF	#000000	##FFFFFF
##3540B0	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0048AE

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3540b0;
/* rgb */ color: rgb(53, 64, 176);
/* oklch */ color: oklch(43.6% 0.176 272.4);

Tailwind

colors: {
  custom: {
    50: '#7d75c9',
    500: '#3540b0',
    950: '#000000',
  },
}

SCSS

$custom: #3540b0;
$custom-light: #7d75c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3540b0",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 176
  },
  "hsl": {
    "h": 234.634,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43613,
    "c": 0.17613,
    "h": 272.4
  },
  "luminance": 0.07558
}

Semantic roles & 50–950 ramp

primary

#3540B0

secondary

#C4BE7D

accent

#D04BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3540B0

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

Preview Lab → · Contrast checker → · Palette generator →