#555BF0#555BF0

#555BF0 is a mid, highly saturated blue. Relative luminance 0.157; OKLCH L 55.7% C 0.219 H 274.9°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#555BF0
RGB	rgb(85, 91, 240)
HSL	hsl(238, 84%, 64%)
HSV	hsv(238, 65%, 94%)
CMYK	cmyk(64.6%, 62.1%, 0%, 5.9%)
CIE-LAB	lab(46.58, 42.77, -75.70)
CIE-LCH	lch(46.58, 86.95, 299.47°)
OKLab	oklab(55.69% 0.0188 -0.2182)
OKLCH	oklch(55.69% 0.219 274.9)
XYZ	xyz(23.2104, 15.7027, 84.2290)
Luminance	0.1570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BF0 #F0EA55

analogous

#55A8F0 #555BF0 #9C55F0

triadic

#555BF0 #F0555B #5BF055

tetradic

#555BF0 #F055A8 #F0EA55 #55F09C

square

#555BF0 #F055A8 #F0EA55 #55F09C

split-complementary

#555BF0 #F09C55 #A8F055

monochromatic

#1017BA #1D25EB #555BF0 #8D91F5 #C5C8FA

Accessibility & contrast

On white

5.07

#555BF0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#555BF0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BF0

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BF0	#FFFFFF	#000000	##FFFFFF
##555BF0	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075F5

Deuteranopia (green-blind)

#0068ED

Tritanopia (blue-blind)

#00819D

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #555bf0;
/* rgb */ color: rgb(85, 91, 240);
/* oklch */ color: oklch(55.7% 0.219 274.9);

Tailwind

colors: {
  custom: {
    50: '#9589f6',
    500: '#555bf0',
    950: '#000000',
  },
}

SCSS

$custom: #555bf0;
$custom-light: #9589f6;
$custom-dark: #000000;

JSON

{
  "hex": "#555bf0",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 240
  },
  "hsl": {
    "h": 237.677,
    "s": 83.784,
    "l": 63.725
  },
  "oklch": {
    "l": 0.55687,
    "c": 0.21904,
    "h": 274.9
  },
  "luminance": 0.15705
}

Semantic roles & 50–950 ramp

primary

#555BF0

secondary

#ECEAB5

accent

#D805E0

background

#FAF8FF

surface

#F3F0FF

border

#CDCBD7

text

#0F0B17

muted

#7F7C85

Preview Lab

Preview with #555BF0

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

Preview Lab → · Contrast checker → · Palette generator →