#3545BB#3545BB

#3545BB is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.5% C 0.185 H 271.0°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#3545BB
RGB	rgb(53, 69, 187)
HSL	hsl(233, 56%, 47%)
HSV	hsv(233, 72%, 73%)
CMYK	cmyk(71.7%, 63.1%, 0%, 26.7%)
CIE-LAB	lab(35.20, 34.00, -63.94)
CIE-LCH	lch(35.20, 72.41, 298.00°)
OKLab	oklab(45.49% 0.0032 -0.1847)
OKLCH	oklch(45.49% 0.185 271)
XYZ	xyz(12.5629, 8.5997, 48.0019)
Luminance	0.0860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.42

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3545BB #BBAB35

analogous

#3588BB #3545BB #6835BB

triadic

#3545BB #BB3545 #45BB35

tetradic

#3545BB #BB3588 #BBAB35 #35BB68

square

#3545BB #BB3588 #BBAB35 #35BB68

split-complementary

#3545BB #BB6835 #88BB35

monochromatic

#1A225C #27338B #3545BB #5C6AD1 #8C96DE

Accessibility & contrast

On white

7.72

#3545BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3545BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3545BB

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3545BB	#FFFFFF	#000000	##FFFFFF
##3545BB	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#004DB9

Tritanopia (blue-blind)

#006379

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3545bb;
/* rgb */ color: rgb(53, 69, 187);
/* oklch */ color: oklch(45.5% 0.185 271.0);

Tailwind

colors: {
  custom: {
    50: '#7f78d0',
    500: '#3545bb',
    950: '#000000',
  },
}

SCSS

$custom: #3545bb;
$custom-light: #7f78d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3545bb",
  "rgb": {
    "r": 53,
    "g": 69,
    "b": 187
  },
  "hsl": {
    "h": 232.836,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.4549,
    "c": 0.1847,
    "h": 271
  },
  "luminance": 0.08601
}

Semantic roles & 50–950 ramp

primary

#3545BB

secondary

#C9C083

accent

#CD49DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3545BB

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

Preview Lab → · Contrast checker → · Palette generator →