#555BBC#555BBC

#555BBC is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.7% C 0.150 H 277.1°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#555BBC
RGB	rgb(85, 91, 188)
HSL	hsl(237, 43%, 54%)
HSV	hsv(237, 55%, 74%)
CMYK	cmyk(54.8%, 51.6%, 0%, 26.3%)
CIE-LAB	lab(42.83, 25.70, -52.06)
CIE-LCH	lch(42.83, 58.06, 296.27°)
OKLab	oklab(51.72% 0.0186 -0.1487)
OKLCH	oklch(51.72% 0.15 277.1)
XYZ	xyz(16.5616, 13.0432, 49.2121)
Luminance	0.1304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BBC #BCB655

analogous

#558EBC #555BBC #8255BC

triadic

#555BBC #BC555B #5BBC55

tetradic

#555BBC #BC558E #BCB655 #55BC82

square

#555BBC #BC558E #BCB655 #55BC82

split-complementary

#555BBC #BC8255 #8EBC55

monochromatic

#2B2E6C #3C4198 #555BBC #8185CD #ADB0DF

Accessibility & contrast

On white

5.82

#555BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#555BBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BBC

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BBC	#FFFFFF	#000000	##FFFFFF
##555BBC	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2869BF

Deuteranopia (green-blind)

#1761BA

Tritanopia (blue-blind)

#227183

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555bbc;
/* rgb */ color: rgb(85, 91, 188);
/* oklch */ color: oklch(51.7% 0.150 277.1);

Tailwind

colors: {
  custom: {
    50: '#8d89d1',
    500: '#555bbc',
    950: '#000000',
  },
}

SCSS

$custom: #555bbc;
$custom-light: #8d89d1;
$custom-dark: #000000;

JSON

{
  "hex": "#555bbc",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 188
  },
  "hsl": {
    "h": 236.505,
    "s": 43.46,
    "l": 53.529
  },
  "oklch": {
    "l": 0.51718,
    "c": 0.14989,
    "h": 277.1
  },
  "luminance": 0.13044
}

Semantic roles & 50–950 ramp

primary

#555BBC

secondary

#CCCAA0

accent

#CC55D3

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555BBC

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

Preview Lab → · Contrast checker → · Palette generator →