#3550B0#3550B0

#3550B0 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.7% C 0.156 H 268.0°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#3550B0
RGB	rgb(53, 80, 176)
HSL	hsl(227, 54%, 45%)
HSV	hsv(227, 70%, 69%)
CMYK	cmyk(69.9%, 54.5%, 0%, 31%)
CIE-LAB	lab(37.17, 22.85, -54.25)
CIE-LCH	lch(37.17, 58.87, 292.84°)
OKLab	oklab(46.68% -0.0055 -0.1561)
OKLCH	oklch(46.68% 0.156 268)
XYZ	xyz(12.1706, 9.6276, 42.2828)
Luminance	0.0963 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550B0 #B09535

analogous

#358EB0 #3550B0 #5735B0

triadic

#3550B0 #B03550 #50B035

tetradic

#3550B0 #B0358E #B09535 #35B057

square

#3550B0 #B0358E #B09535 #35B057

split-complementary

#3550B0 #B05735 #8EB035

monochromatic

#192552 #273B81 #3550B0 #5670CC #8598DA

Accessibility & contrast

On white

7.18

#3550B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3550B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3550B0

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550B0	#FFFFFF	#000000	##FFFFFF
##3550B0	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#035DB3

Deuteranopia (green-blind)

#0052AE

Tritanopia (blue-blind)

#006778

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3550b0;
/* rgb */ color: rgb(53, 80, 176);
/* oklch */ color: oklch(46.7% 0.156 268.0);

Tailwind

colors: {
  custom: {
    50: '#7c80c8',
    500: '#3550b0',
    950: '#000000',
  },
}

SCSS

$custom: #3550b0;
$custom-light: #7c80c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3550b0",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 176
  },
  "hsl": {
    "h": 226.829,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.46681,
    "c": 0.15618,
    "h": 268
  },
  "luminance": 0.09629
}

Semantic roles & 50–950 ramp

primary

#3550B0

secondary

#C4B47D

accent

#BD4BDD

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3550B0

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

Preview Lab → · Contrast checker → · Palette generator →