#3555AB#3555AB

#3555AB is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.3% C 0.143 H 265.8°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#3555AB
RGB	rgb(53, 85, 171)
HSL	hsl(224, 53%, 44%)
HSV	hsv(224, 69%, 67%)
CMYK	cmyk(69%, 50.3%, 0%, 32.9%)
CIE-LAB	lab(38.19, 17.72, -49.64)
CIE-LCH	lch(38.19, 52.71, 289.65°)
OKLab	oklab(47.34% -0.0104 -0.1424)
OKLCH	oklch(47.34% 0.143 265.8)
XYZ	xyz(12.0648, 10.1930, 39.8518)
Luminance	0.1019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3555AB #AB8B35

analogous

#3590AB #3555AB #5035AB

triadic

#3555AB #AB3555 #55AB35

tetradic

#3555AB #AB3590 #AB8B35 #35AB50

square

#3555AB #AB3590 #AB8B35 #35AB50

split-complementary

#3555AB #AB5035 #90AB35

monochromatic

#18274E #273E7C #3555AB #5374CA #8299D8

Accessibility & contrast

On white

6.91

#3555AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3555AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3555AB

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3555AB	#FFFFFF	#000000	##FFFFFF
##3555AB	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2460AE

Deuteranopia (green-blind)

#0055A9

Tritanopia (blue-blind)

#006978

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3555ab;
/* rgb */ color: rgb(53, 85, 171);
/* oklch */ color: oklch(47.3% 0.143 265.8);

Tailwind

colors: {
  custom: {
    50: '#7a84c5',
    500: '#3555ab',
    950: '#000000',
  },
}

SCSS

$custom: #3555ab;
$custom-light: #7a84c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3555ab",
  "rgb": {
    "r": 53,
    "g": 85,
    "b": 171
  },
  "hsl": {
    "h": 223.729,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.47343,
    "c": 0.14281,
    "h": 265.8
  },
  "luminance": 0.10194
}

Semantic roles & 50–950 ramp

primary

#3555AB

secondary

#C2AE7A

accent

#B54CDC

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3555AB

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

Preview Lab → · Contrast checker → · Palette generator →