#3555B5#3555B5

#3555B5 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.1% C 0.157 H 266.6°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3555B5
RGB	rgb(53, 85, 181)
HSL	hsl(225, 55%, 46%)
HSV	hsv(225, 71%, 71%)
CMYK	cmyk(70.7%, 53%, 0%, 29%)
CIE-LAB	lab(38.88, 21.43, -54.43)
CIE-LCH	lch(38.88, 58.49, 291.49°)
OKLab	oklab(48.09% -0.0094 -0.1565)
OKLCH	oklch(48.09% 0.157 266.6)
XYZ	xyz(13.0543, 10.5887, 45.0630)
Luminance	0.1059 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3555B5 #B59535

analogous

#3595B5 #3555B5 #5535B5

triadic

#3555B5 #B53555 #55B535

tetradic

#3555B5 #B53595 #B59535 #35B555

square

#3555B5 #B53595 #B59535 #35B555

split-complementary

#3555B5 #B55535 #95B535

monochromatic

#192956 #273F86 #3555B5 #5976CE #889DDC

Accessibility & contrast

On white

6.74

#3555B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3555B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3555B5

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3555B5	#FFFFFF	#000000	##FFFFFF
##3555B5	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1362B8

Deuteranopia (green-blind)

#0056B3

Tritanopia (blue-blind)

#006C7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3555b5;
/* rgb */ color: rgb(53, 85, 181);
/* oklch */ color: oklch(48.1% 0.157 266.6);

Tailwind

colors: {
  custom: {
    50: '#7c84cc',
    500: '#3555b5',
    950: '#000000',
  },
}

SCSS

$custom: #3555b5;
$custom-light: #7c84cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3555b5",
  "rgb": {
    "r": 53,
    "g": 85,
    "b": 181
  },
  "hsl": {
    "h": 225,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.48089,
    "c": 0.1568,
    "h": 266.6
  },
  "luminance": 0.1059
}

Semantic roles & 50–950 ramp

primary

#3555B5

secondary

#C6B580

accent

#B94ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3555B5

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

Preview Lab → · Contrast checker → · Palette generator →