#3543BB#3543BB

#3543BB is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.1% C 0.187 H 271.4°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#3543BB
RGB	rgb(53, 67, 187)
HSL	hsl(234, 56%, 47%)
HSV	hsv(234, 72%, 73%)
CMYK	cmyk(71.7%, 64.2%, 0%, 26.7%)
CIE-LAB	lab(34.72, 35.27, -64.73)
CIE-LCH	lch(34.72, 73.71, 298.58°)
OKLab	oklab(45.13% 0.0046 -0.187)
OKLCH	oklch(45.13% 0.187 271.4)
XYZ	xyz(12.4420, 8.3578, 47.9616)
Luminance	0.0836 (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

#3543BB #BBAD35

analogous

#3586BB #3543BB #6A35BB

triadic

#3543BB #BB3543 #43BB35

tetradic

#3543BB #BB3586 #BBAD35 #35BB6A

square

#3543BB #BB3586 #BBAD35 #35BB6A

split-complementary

#3543BB #BB6A35 #86BB35

monochromatic

#1A215C #27328B #3543BB #5C68D1 #8C95DE

Accessibility & contrast

On white

7.86

#3543BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3543BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3543BB

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3543BB	#FFFFFF	#000000	##FFFFFF
##3543BB	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#004BB9

Tritanopia (blue-blind)

#006279

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3543bb;
/* rgb */ color: rgb(53, 67, 187);
/* oklch */ color: oklch(45.1% 0.187 271.4);

Tailwind

colors: {
  custom: {
    50: '#7f77d0',
    500: '#3543bb',
    950: '#000000',
  },
}

SCSS

$custom: #3543bb;
$custom-light: #7f77d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3543bb",
  "rgb": {
    "r": 53,
    "g": 67,
    "b": 187
  },
  "hsl": {
    "h": 233.731,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.45134,
    "c": 0.18707,
    "h": 271.4
  },
  "luminance": 0.08359
}

Semantic roles & 50–950 ramp

primary

#3543BB

secondary

#C9C183

accent

#CF49DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3543BB

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

Preview Lab → · Contrast checker → · Palette generator →