#3540BA#3540BA

#3540BA is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.5% C 0.189 H 272.0°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#3540BA
RGB	rgb(53, 64, 186)
HSL	hsl(235, 56%, 47%)
HSV	hsv(235, 72%, 73%)
CMYK	cmyk(71.5%, 65.6%, 0%, 27.1%)
CIE-LAB	lab(33.92, 36.80, -65.45)
CIE-LCH	lch(33.92, 75.09, 299.35°)
OKLab	oklab(44.52% 0.0067 -0.1892)
OKLCH	oklch(44.52% 0.189 272)
XYZ	xyz(12.1615, 7.9676, 47.3418)
Luminance	0.0797 (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

#3540BA #BAAF35

analogous

#3582BA #3540BA #6D35BA

triadic

#3540BA #BA3540 #40BA35

tetradic

#3540BA #BA3582 #BAAF35 #35BA6D

square

#3540BA #BA3582 #BAAF35 #35BA6D

split-complementary

#3540BA #BA6D35 #82BA35

monochromatic

#1A1F5B #27308A #3540BA #5C65D0 #8B92DE

Accessibility & contrast

On white

8.10

#3540BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3540BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540BA

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540BA	#FFFFFF	#000000	##FFFFFF
##3540BA	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BE

Deuteranopia (green-blind)

#004AB8

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3540ba;
/* rgb */ color: rgb(53, 64, 186);
/* oklch */ color: oklch(44.5% 0.189 272.0);

Tailwind

colors: {
  custom: {
    50: '#7f75d0',
    500: '#3540ba',
    950: '#000000',
  },
}

SCSS

$custom: #3540ba;
$custom-light: #7f75d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3540ba",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 186
  },
  "hsl": {
    "h": 235.038,
    "s": 55.649,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4452,
    "c": 0.18927,
    "h": 272
  },
  "luminance": 0.07969
}

Semantic roles & 50–950 ramp

primary

#3540BA

secondary

#C8C382

accent

#D349DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3540BA

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

Preview Lab → · Contrast checker → · Palette generator →