#3540A9#3540A9

#3540A9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.167 H 272.6°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#3540A9
RGB	rgb(53, 64, 169)
HSL	hsl(234, 52%, 44%)
HSV	hsv(234, 69%, 66%)
CMYK	cmyk(68.6%, 62.1%, 0%, 33.7%)
CIE-LAB	lab(32.45, 30.77, -57.75)
CIE-LCH	lch(32.45, 65.43, 298.05°)
OKLab	oklab(43% 0.0076 -0.1665)
OKLCH	oklch(43% 0.167 272.6)
XYZ	xyz(10.4606, 7.2873, 38.3837)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540A9 #A99E35

analogous

#357AA9 #3540A9 #6435A9

triadic

#3540A9 #A93540 #40A935

tetradic

#3540A9 #A9357A #A99E35 #35A964

square

#3540A9 #A9357A #A99E35 #35A964

split-complementary

#3540A9 #A96435 #7AA935

monochromatic

#181D4C #262E7A #3540A9 #525EC9 #8189D7

Accessibility & contrast

On white

8.54

#3540A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3540A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540A9

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540A9	#FFFFFF	#000000	##FFFFFF
##3540A9	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AC

Deuteranopia (green-blind)

#0047A7

Tritanopia (blue-blind)

#005B6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3540a9;
/* rgb */ color: rgb(53, 64, 169);
/* oklch */ color: oklch(43.0% 0.167 272.6);

Tailwind

colors: {
  custom: {
    50: '#7b75c3',
    500: '#3540a9',
    950: '#000000',
  },
}

SCSS

$custom: #3540a9;
$custom-light: #7b75c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3540a9",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 169
  },
  "hsl": {
    "h": 234.31,
    "s": 52.252,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42995,
    "c": 0.16672,
    "h": 272.6
  },
  "luminance": 0.07288
}

Semantic roles & 50–950 ramp

primary

#3540A9

secondary

#C1BA79

accent

#CE4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3540A9

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

Preview Lab → · Contrast checker → · Palette generator →