#3550B3#3550B3

#3550B3 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.9% C 0.160 H 268.1°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#3550B3
RGB	rgb(53, 80, 179)
HSL	hsl(227, 54%, 45%)
HSV	hsv(227, 70%, 70%)
CMYK	cmyk(70.4%, 55.3%, 0%, 29.8%)
CIE-LAB	lab(37.39, 23.96, -55.67)
CIE-LCH	lch(37.39, 60.60, 293.29°)
OKLab	oklab(46.92% -0.0053 -0.1602)
OKLCH	oklch(46.92% 0.16 268.1)
XYZ	xyz(12.4707, 9.7476, 43.8633)
Luminance	0.0975 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550B3 #B39835

analogous

#358FB3 #3550B3 #5935B3

triadic

#3550B3 #B33550 #50B335

tetradic

#3550B3 #B3358F #B39835 #35B359

square

#3550B3 #B3358F #B39835 #35B359

split-complementary

#3550B3 #B35935 #8FB335

monochromatic

#192655 #273B84 #3550B3 #5871CD #8799DB

Accessibility & contrast

On white

7.12

#3550B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3550B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3550B3

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550B3	#FFFFFF	#000000	##FFFFFF
##3550B3	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB6

Deuteranopia (green-blind)

#0052B1

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3550b3;
/* rgb */ color: rgb(53, 80, 179);
/* oklch */ color: oklch(46.9% 0.160 268.1);

Tailwind

colors: {
  custom: {
    50: '#7c80ca',
    500: '#3550b3',
    950: '#000000',
  },
}

SCSS

$custom: #3550b3;
$custom-light: #7c80ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3550b3",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 179
  },
  "hsl": {
    "h": 227.143,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.46917,
    "c": 0.16033,
    "h": 268.1
  },
  "luminance": 0.09749
}

Semantic roles & 50–950 ramp

primary

#3550B3

secondary

#C5B67F

accent

#BE4ADE

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3550B3

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

Preview Lab → · Contrast checker → · Palette generator →