#3540AC#3540AC

#3540AC is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.171 H 272.5°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#3540AC
RGB	rgb(53, 64, 172)
HSL	hsl(234, 53%, 44%)
HSV	hsv(234, 69%, 67%)
CMYK	cmyk(69.2%, 62.8%, 0%, 32.5%)
CIE-LAB	lab(32.70, 31.84, -59.13)
CIE-LCH	lch(32.70, 67.16, 298.30°)
OKLab	oklab(43.26% 0.0075 -0.1706)
OKLCH	oklch(43.26% 0.171 272.5)
XYZ	xyz(10.7455, 7.4012, 39.8840)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.05

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540AC #ACA135

analogous

#357CAC #3540AC #6635AC

triadic

#3540AC #AC3540 #40AC35

tetradic

#3540AC #AC357C #ACA135 #35AC66

square

#3540AC #AC357C #ACA135 #35AC66

split-complementary

#3540AC #AC6635 #7CAC35

monochromatic

#181D4E #272F7D #3540AC #545FCA #838BD9

Accessibility & contrast

On white

8.47

#3540AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#3540AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540AC

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540AC	#FFFFFF	#000000	##FFFFFF
##3540AC	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AF

Deuteranopia (green-blind)

#0048AA

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3540ac;
/* rgb */ color: rgb(53, 64, 172);
/* oklch */ color: oklch(43.3% 0.171 272.5);

Tailwind

colors: {
  custom: {
    50: '#7c75c6',
    500: '#3540ac',
    950: '#000000',
  },
}

SCSS

$custom: #3540ac;
$custom-light: #7c75c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3540ac",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 172
  },
  "hsl": {
    "h": 234.454,
    "s": 52.889,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43258,
    "c": 0.17078,
    "h": 272.5
  },
  "luminance": 0.07402
}

Semantic roles & 50–950 ramp

primary

#3540AC

secondary

#C2BC7B

accent

#CF4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3540AC

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

Preview Lab → · Contrast checker → · Palette generator →