#3551BD#3551BD

#3551BD is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.9% C 0.173 H 268.1°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#3551BD
RGB	rgb(53, 81, 189)
HSL	hsl(228, 56%, 47%)
HSV	hsv(228, 72%, 74%)
CMYK	cmyk(72%, 57.1%, 0%, 25.9%)
CIE-LAB	lab(38.40, 26.99, -59.89)
CIE-LCH	lch(38.40, 65.69, 294.25°)
OKLab	oklab(47.92% -0.0056 -0.1727)
OKLCH	oklch(47.92% 0.173 268.1)
XYZ	xyz(13.5928, 10.3145, 49.4088)
Luminance	0.1032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3551BD #BDA135

analogous

#3595BD #3551BD #5D35BD

triadic

#3551BD #BD3551 #51BD35

tetradic

#3551BD #BD3595 #BDA135 #35BD5D

square

#3551BD #BD3595 #BDA135 #35BD5D

split-complementary

#3551BD #BD5D35 #95BD35

monochromatic

#1A285D #283D8D #3551BD #5D75D2 #8D9EDF

Accessibility & contrast

On white

6.86

#3551BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3551BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3551BD

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3551BD	#FFFFFF	#000000	##FFFFFF
##3551BD	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C1

Deuteranopia (green-blind)

#0054BB

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3551bd;
/* rgb */ color: rgb(53, 81, 189);
/* oklch */ color: oklch(47.9% 0.173 268.1);

Tailwind

colors: {
  custom: {
    50: '#7e81d2',
    500: '#3551bd',
    950: '#000000',
  },
}

SCSS

$custom: #3551bd;
$custom-light: #7e81d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3551bd",
  "rgb": {
    "r": 53,
    "g": 81,
    "b": 189
  },
  "hsl": {
    "h": 227.647,
    "s": 56.198,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47915,
    "c": 0.17275,
    "h": 268.1
  },
  "luminance": 0.10316
}

Semantic roles & 50–950 ramp

primary

#3551BD

secondary

#CABB84

accent

#C048DF

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3551BD

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

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