#555CBA#555CBA

#555CBA is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.8% C 0.146 H 276.8°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#555CBA
RGB	rgb(85, 92, 186)
HSL	hsl(236, 42%, 53%)
HSV	hsv(236, 54%, 73%)
CMYK	cmyk(54.3%, 50.5%, 0%, 27.1%)
CIE-LAB	lab(42.96, 24.42, -50.68)
CIE-LCH	lch(42.96, 56.26, 295.73°)
OKLab	oklab(51.78% 0.0173 -0.1447)
OKLCH	oklch(51.78% 0.146 276.8)
XYZ	xyz(16.4336, 13.1297, 48.1132)
Luminance	0.1313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555CBA #BAB355

analogous

#558EBA #555CBA #8155BA

triadic

#555CBA #BA555C #5CBA55

tetradic

#555CBA #BA558E #BAB355 #55BA81

square

#555CBA #BA558E #BAB355 #55BA81

split-complementary

#555CBA #BA8155 #8EBA55

monochromatic

#2B2F6A #3D4395 #555CBA #8186CC #ACAFDD

Accessibility & contrast

On white

5.79

#555CBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#555CBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555CBA

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555CBA	#FFFFFF	#000000	##FFFFFF
##555CBA	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6ABD

Deuteranopia (green-blind)

#1F61B8

Tritanopia (blue-blind)

#247182

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555cba;
/* rgb */ color: rgb(85, 92, 186);
/* oklch */ color: oklch(51.8% 0.146 276.8);

Tailwind

colors: {
  custom: {
    50: '#8c8acf',
    500: '#555cba',
    950: '#000000',
  },
}

SCSS

$custom: #555cba;
$custom-light: #8c8acf;
$custom-dark: #000000;

JSON

{
  "hex": "#555cba",
  "rgb": {
    "r": 85,
    "g": 92,
    "b": 186
  },
  "hsl": {
    "h": 235.842,
    "s": 42.259,
    "l": 53.137
  },
  "oklch": {
    "l": 0.51775,
    "c": 0.14571,
    "h": 276.8
  },
  "luminance": 0.13131
}

Semantic roles & 50–950 ramp

primary

#555CBA

secondary

#CBC8A0

accent

#C956D2

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555CBA

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

Preview Lab → · Contrast checker → · Palette generator →