#556BCB#556BCB

#556BCB is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.9% C 0.150 H 271.1°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#556BCB
RGB	rgb(85, 107, 203)
HSL	hsl(229, 53%, 56%)
HSV	hsv(229, 58%, 80%)
CMYK	cmyk(58.1%, 47.3%, 0%, 20.4%)
CIE-LAB	lab(47.95, 20.64, -52.49)
CIE-LCH	lch(47.95, 56.41, 291.47°)
OKLab	oklab(55.9% 0.0029 -0.1499)
OKLCH	oklch(55.9% 0.15 271.1)
XYZ	xyz(19.7799, 16.7569, 58.6804)
Luminance	0.1676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BCB #CBB555

analogous

#55A6CB #556BCB #7A55CB

triadic

#556BCB #CB556B #6BCB55

tetradic

#556BCB #CB55A6 #CBB555 #55CB7A

square

#556BCB #CB55A6 #CBB555 #55CB7A

split-complementary

#556BCB #CB7A55 #A6CB55

monochromatic

#27377F #354CAE #556BCB #8494D9 #B3BDE8

Accessibility & contrast

On white

4.83

#556BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#556BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BCB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BCB	#FFFFFF	#000000	##FFFFFF
##556BCB	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D77CF

Deuteranopia (green-blind)

#2B6DC9

Tritanopia (blue-blind)

#008191

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #556bcb;
/* rgb */ color: rgb(85, 107, 203);
/* oklch */ color: oklch(55.9% 0.150 271.1);

Tailwind

colors: {
  custom: {
    50: '#8e95db',
    500: '#556bcb',
    950: '#000000',
  },
}

SCSS

$custom: #556bcb;
$custom-light: #8e95db;
$custom-dark: #000000;

JSON

{
  "hex": "#556bcb",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 203
  },
  "hsl": {
    "h": 228.814,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.55897,
    "c": 0.14989,
    "h": 271.1
  },
  "luminance": 0.16758
}

Semantic roles & 50–950 ramp

primary

#556BCB

secondary

#D6CDA6

accent

#C14BDD

background

#F9F9FD

surface

#F1F1FB

border

#CBCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556BCB

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

Preview Lab → · Contrast checker → · Palette generator →