#555BDB#555BDB

#555BDB is a mid, vivid blue. Relative luminance 0.145; OKLCH L 54.0% C 0.192 H 275.8°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#555BDB
RGB	rgb(85, 91, 219)
HSL	hsl(237, 65%, 60%)
HSV	hsv(237, 61%, 86%)
CMYK	cmyk(61.2%, 58.4%, 0%, 14.1%)
CIE-LAB	lab(44.98, 35.89, -66.44)
CIE-LCH	lch(44.98, 75.51, 298.38°)
OKLab	oklab(54.01% 0.0196 -0.191)
OKLCH	oklch(54.01% 0.192 275.8)
XYZ	xyz(20.2694, 14.5263, 68.7398)
Luminance	0.1453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BDB #DBD555

analogous

#559EDB #555BDB #9255DB

triadic

#555BDB #DB555B #5BDB55

tetradic

#555BDB #DB559E #DBD555 #55DB92

square

#555BDB #DB559E #DBD555 #55DB92

split-complementary

#555BDB #DB9255 #9EDB55

monochromatic

#202596 #2A32C8 #555BDB #888CE6 #BABCF0

Accessibility & contrast

On white

5.38

#555BDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#555BDB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BDB

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BDB	#FFFFFF	#000000	##FFFFFF
##555BDB	1.00	5.38	3.91	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DF

Deuteranopia (green-blind)

#0065D8

Tritanopia (blue-blind)

#007A92

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #555bdb;
/* rgb */ color: rgb(85, 91, 219);
/* oklch */ color: oklch(54.0% 0.192 275.8);

Tailwind

colors: {
  custom: {
    50: '#9289e7',
    500: '#555bdb',
    950: '#000000',
  },
}

SCSS

$custom: #555bdb;
$custom-light: #9289e7;
$custom-dark: #000000;

JSON

{
  "hex": "#555bdb",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 219
  },
  "hsl": {
    "h": 237.313,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.54005,
    "c": 0.19203,
    "h": 275.8
  },
  "luminance": 0.14528
}

Semantic roles & 50–950 ramp

primary

#555BDB

secondary

#E0DEAC

accent

#E040E8

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0B16

muted

#7E7C84

Preview Lab

Preview with #555BDB

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

Preview Lab → · Contrast checker → · Palette generator →