#555BBA#555BBA

#555BBA is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.6% C 0.147 H 277.2°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#555BBA
RGB	rgb(85, 91, 186)
HSL	hsl(236, 42%, 53%)
HSV	hsv(236, 54%, 73%)
CMYK	cmyk(54.3%, 51.1%, 0%, 27.1%)
CIE-LAB	lab(42.70, 25.05, -51.10)
CIE-LCH	lch(42.70, 56.91, 296.11°)
OKLab	oklab(51.58% 0.0184 -0.1459)
OKLCH	oklch(51.58% 0.147 277.2)
XYZ	xyz(16.3475, 12.9576, 48.0845)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BBA #BAB455

analogous

#558DBA #555BBA #8155BA

triadic

#555BBA #BA555B #5BBA55

tetradic

#555BBA #BA558D #BAB455 #55BA81

square

#555BBA #BA558D #BAB455 #55BA81

split-complementary

#555BBA #BA8155 #8DBA55

monochromatic

#2B2F6A #3D4295 #555BBA #8185CC #ACAFDD

Accessibility & contrast

On white

5.85

#555BBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#555BBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BBA

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BBA	#FFFFFF	#000000	##FFFFFF
##555BBA	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A69BD

Deuteranopia (green-blind)

#1C61B8

Tritanopia (blue-blind)

#257082

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555bba;
/* rgb */ color: rgb(85, 91, 186);
/* oklch */ color: oklch(51.6% 0.147 277.2);

Tailwind

colors: {
  custom: {
    50: '#8d89cf',
    500: '#555bba',
    950: '#000000',
  },
}

SCSS

$custom: #555bba;
$custom-light: #8d89cf;
$custom-dark: #000000;

JSON

{
  "hex": "#555bba",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 186
  },
  "hsl": {
    "h": 236.436,
    "s": 42.259,
    "l": 53.137
  },
  "oklch": {
    "l": 0.5158,
    "c": 0.14707,
    "h": 277.2
  },
  "luminance": 0.12959
}

Semantic roles & 50–950 ramp

primary

#555BBA

secondary

#CBC9A0

accent

#CB56D2

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555BBA

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

Preview Lab → · Contrast checker → · Palette generator →