#3540BF#3540BF

#3540BF is a dark, vivid blue. Relative luminance 0.082; OKLCH L 45.0% C 0.196 H 271.8°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#3540BF
RGB	rgb(53, 64, 191)
HSL	hsl(235, 57%, 48%)
HSV	hsv(235, 72%, 75%)
CMYK	cmyk(72.3%, 66.5%, 0%, 25.1%)
CIE-LAB	lab(34.36, 38.55, -67.66)
CIE-LCH	lch(34.36, 77.87, 299.67°)
OKLab	oklab(44.98% 0.0063 -0.1956)
OKLCH	oklch(44.98% 0.196 271.8)
XYZ	xyz(12.7024, 8.1840, 50.1903)
Luminance	0.0819 (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

#3540BF #BFB435

analogous

#3585BF #3540BF #6F35BF

triadic

#3540BF #BF3540 #40BF35

tetradic

#3540BF #BF3585 #BFB435 #35BF6F

square

#3540BF #BF3585 #BFB435 #35BF6F

split-complementary

#3540BF #BF6F35 #85BF35

monochromatic

#1A205F #28308F #3540BF #5F68D3 #8F95E0

Accessibility & contrast

On white

7.96

#3540BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3540BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540BF

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540BF	#FFFFFF	#000000	##FFFFFF
##3540BF	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C3

Deuteranopia (green-blind)

#004ABD

Tritanopia (blue-blind)

#00627A

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3540bf;
/* rgb */ color: rgb(53, 64, 191);
/* oklch */ color: oklch(45.0% 0.196 271.8);

Tailwind

colors: {
  custom: {
    50: '#8075d3',
    500: '#3540bf',
    950: '#000000',
  },
}

SCSS

$custom: #3540bf;
$custom-light: #8075d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3540bf",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 191
  },
  "hsl": {
    "h": 235.217,
    "s": 56.557,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44984,
    "c": 0.19571,
    "h": 271.8
  },
  "luminance": 0.08185
}

Semantic roles & 50–950 ramp

primary

#3540BF

secondary

#CAC585

accent

#D448E0

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3540BF

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

Preview Lab → · Contrast checker → · Palette generator →