#3540B2#3540B2

#3540B2 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.8% C 0.179 H 272.3°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#3540B2
RGB	rgb(53, 64, 178)
HSL	hsl(235, 54%, 45%)
HSV	hsv(235, 70%, 70%)
CMYK	cmyk(70.2%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.21, 33.98, -61.87)
CIE-LCH	lch(33.21, 70.58, 298.77°)
OKLab	oklab(43.79% 0.0072 -0.1786)
OKLCH	oklch(43.79% 0.179 272.3)
XYZ	xyz(11.3348, 7.6369, 42.9876)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540B2 #B2A735

analogous

#357EB2 #3540B2 #6835B2

triadic

#3540B2 #B23540 #40B235

tetradic

#3540B2 #B2357E #B2A735 #35B268

square

#3540B2 #B2357E #B2A735 #35B268

split-complementary

#3540B2 #B26835 #7EB235

monochromatic

#191E54 #272F83 #3540B2 #5762CD #868EDB

Accessibility & contrast

On white

8.31

#3540B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3540B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540B2

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540B2	#FFFFFF	#000000	##FFFFFF
##3540B2	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3540b2;
/* rgb */ color: rgb(53, 64, 178);
/* oklch */ color: oklch(43.8% 0.179 272.3);

Tailwind

colors: {
  custom: {
    50: '#7d75ca',
    500: '#3540b2',
    950: '#000000',
  },
}

SCSS

$custom: #3540b2;
$custom-light: #7d75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3540b2",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 234.72,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43792,
    "c": 0.17879,
    "h": 272.3
  },
  "luminance": 0.07638
}

Semantic roles & 50–950 ramp

primary

#3540B2

secondary

#C5BF7E

accent

#D14ADD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3540B2

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

Preview Lab → · Contrast checker → · Palette generator →