#3550B8#3550B8

#3550B8 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.3% C 0.167 H 268.3°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#3550B8
RGB	rgb(53, 80, 184)
HSL	hsl(228, 55%, 46%)
HSV	hsv(228, 71%, 72%)
CMYK	cmyk(71.2%, 56.5%, 0%, 27.8%)
CIE-LAB	lab(37.76, 25.80, -58.01)
CIE-LCH	lch(37.76, 63.48, 293.98°)
OKLab	oklab(47.32% -0.005 -0.1671)
OKLCH	oklch(47.32% 0.167 268.3)
XYZ	xyz(12.9856, 9.9536, 46.5750)
Luminance	0.0995 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550B8 #B89D35

analogous

#3592B8 #3550B8 #5C35B8

triadic

#3550B8 #B83550 #50B835

tetradic

#3550B8 #B83592 #B89D35 #35B85C

square

#3550B8 #B83592 #B89D35 #35B85C

split-complementary

#3550B8 #B85C35 #92B835

monochromatic

#1A2759 #273B88 #3550B8 #5B73D0 #8A9BDD

Accessibility & contrast

On white

7.02

#3550B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#3550B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3550B8

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550B8	#FFFFFF	#000000	##FFFFFF
##3550B8	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBC

Deuteranopia (green-blind)

#0053B6

Tritanopia (blue-blind)

#00697C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3550b8;
/* rgb */ color: rgb(53, 80, 184);
/* oklch */ color: oklch(47.3% 0.167 268.3);

Tailwind

colors: {
  custom: {
    50: '#7d80ce',
    500: '#3550b8',
    950: '#000000',
  },
}

SCSS

$custom: #3550b8;
$custom-light: #7d80ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3550b8",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 184
  },
  "hsl": {
    "h": 227.634,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.47315,
    "c": 0.1672,
    "h": 268.3
  },
  "luminance": 0.09955
}

Semantic roles & 50–950 ramp

primary

#3550B8

secondary

#C7B981

accent

#C049DF

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3550B8

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

Preview Lab → · Contrast checker → · Palette generator →