#3555BF#3555BF

#3555BF is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.9% C 0.171 H 267.1°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#3555BF
RGB	rgb(53, 85, 191)
HSL	hsl(226, 57%, 48%)
HSV	hsv(226, 72%, 75%)
CMYK	cmyk(72.3%, 55.5%, 0%, 25.1%)
CIE-LAB	lab(39.60, 25.12, -59.11)
CIE-LCH	lch(39.60, 64.23, 293.03°)
OKLab	oklab(48.87% -0.0087 -0.1703)
OKLCH	oklch(48.87% 0.171 267.1)
XYZ	xyz(14.1174, 11.0140, 50.6620)
Luminance	0.1101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3555BF #BF9F35

analogous

#359ABF #3555BF #5A35BF

triadic

#3555BF #BF3555 #55BF35

tetradic

#3555BF #BF359A #BF9F35 #35BF5A

square

#3555BF #BF359A #BF9F35 #35BF5A

split-complementary

#3555BF #BF5A35 #9ABF35

monochromatic

#1A2A5F #28408F #3555BF #5F7AD3 #8FA1E0

Accessibility & contrast

On white

6.56

#3555BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3555BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3555BF

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3555BF	#FFFFFF	#000000	##FFFFFF
##3555BF	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C3

Deuteranopia (green-blind)

#0057BD

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3555bf;
/* rgb */ color: rgb(53, 85, 191);
/* oklch */ color: oklch(48.9% 0.171 267.1);

Tailwind

colors: {
  custom: {
    50: '#7e84d3',
    500: '#3555bf',
    950: '#000000',
  },
}

SCSS

$custom: #3555bf;
$custom-light: #7e84d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3555bf",
  "rgb": {
    "r": 53,
    "g": 85,
    "b": 191
  },
  "hsl": {
    "h": 226.087,
    "s": 56.557,
    "l": 47.843
  },
  "oklch": {
    "l": 0.48866,
    "c": 0.17052,
    "h": 267.1
  },
  "luminance": 0.11015
}

Semantic roles & 50–950 ramp

primary

#3555BF

secondary

#CABA85

accent

#BD48E0

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3555BF

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

Preview Lab → · Contrast checker → · Palette generator →