#555BBD#555BBD

#555BBD is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.8% C 0.151 H 277.1°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#555BBD
RGB	rgb(85, 91, 189)
HSL	hsl(237, 44%, 54%)
HSV	hsv(237, 55%, 74%)
CMYK	cmyk(55%, 51.9%, 0%, 25.9%)
CIE-LAB	lab(42.89, 26.03, -52.54)
CIE-LCH	lch(42.89, 58.63, 296.35°)
OKLab	oklab(51.79% 0.0187 -0.1501)
OKLCH	oklch(51.79% 0.151 277.1)
XYZ	xyz(16.6698, 13.0865, 49.7818)
Luminance	0.1309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BBD #BDB755

analogous

#558FBD #555BBD #8355BD

triadic

#555BBD #BD555B #5BBD55

tetradic

#555BBD #BD558F #BDB755 #55BD83

square

#555BBD #BD558F #BDB755 #55BD83

split-complementary

#555BBD #BD8355 #8FBD55

monochromatic

#2A2E6D #3C4199 #555BBD #8186CE #ADB0DF

Accessibility & contrast

On white

5.80

#555BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#555BBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BBD

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BBD	#FFFFFF	#000000	##FFFFFF
##555BBD	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#266AC0

Deuteranopia (green-blind)

#1561BB

Tritanopia (blue-blind)

#217183

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #555bbd;
/* rgb */ color: rgb(85, 91, 189);
/* oklch */ color: oklch(51.8% 0.151 277.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#555bbd",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 189
  },
  "hsl": {
    "h": 236.538,
    "s": 44.068,
    "l": 53.725
  },
  "oklch": {
    "l": 0.51788,
    "c": 0.1513,
    "h": 277.1
  },
  "luminance": 0.13088
}

Semantic roles & 50–950 ramp

primary

#555BBD

secondary

#CDCBA1

accent

#CC54D4

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #555BBD

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

Preview Lab → · Contrast checker → · Palette generator →