#3540BC#3540BC

#3540BC is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.7% C 0.192 H 271.9°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#3540BC
RGB	rgb(53, 64, 188)
HSL	hsl(235, 56%, 47%)
HSV	hsv(235, 72%, 74%)
CMYK	cmyk(71.8%, 66%, 0%, 26.3%)
CIE-LAB	lab(34.09, 37.50, -66.34)
CIE-LCH	lch(34.09, 76.21, 299.48°)
OKLab	oklab(44.71% 0.0065 -0.1917)
OKLCH	oklch(44.71% 0.192 271.9)
XYZ	xyz(12.3756, 8.0533, 48.4694)
Luminance	0.0805 (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

#3540BC #BCB135

analogous

#3584BC #3540BC #6D35BC

triadic

#3540BC #BC3540 #40BC35

tetradic

#3540BC #BC3584 #BCB135 #35BC6D

square

#3540BC #BC3584 #BCB135 #35BC6D

split-complementary

#3540BC #BC6D35 #84BC35

monochromatic

#1A1F5D #28308C #3540BC #5D66D1 #8D93DF

Accessibility & contrast

On white

8.04

#3540BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3540BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540BC

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540BC	#FFFFFF	#000000	##FFFFFF
##3540BC	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C0

Deuteranopia (green-blind)

#004ABA

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3540bc;
/* rgb */ color: rgb(53, 64, 188);
/* oklch */ color: oklch(44.7% 0.192 271.9);

Tailwind

colors: {
  custom: {
    50: '#7f75d1',
    500: '#3540bc',
    950: '#000000',
  },
}

SCSS

$custom: #3540bc;
$custom-light: #7f75d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3540bc",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 188
  },
  "hsl": {
    "h": 235.111,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44705,
    "c": 0.19185,
    "h": 271.9
  },
  "luminance": 0.08055
}

Semantic roles & 50–950 ramp

primary

#3540BC

secondary

#C9C384

accent

#D348DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3540BC

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

Preview Lab → · Contrast checker → · Palette generator →