#556EBA#556EBA

#556EBA is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.5% C 0.122 H 268.5°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#556EBA
RGB	rgb(85, 110, 186)
HSL	hsl(225, 42%, 53%)
HSV	hsv(225, 54%, 73%)
CMYK	cmyk(54.3%, 40.9%, 0%, 27.1%)
CIE-LAB	lab(47.79, 13.16, -42.97)
CIE-LCH	lch(47.79, 44.94, 287.02°)
OKLab	oklab(55.45% -0.0032 -0.1219)
OKLCH	oklch(55.45% 0.122 268.5)
XYZ	xyz(18.1822, 16.6270, 48.6961)
Luminance	0.1663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556EBA #BAA155

analogous

#55A0BA #556EBA #6F55BA

triadic

#556EBA #BA556E #6EBA55

tetradic

#556EBA #BA55A0 #BAA155 #55BA6F

square

#556EBA #BA55A0 #BAA155 #55BA6F

split-complementary

#556EBA #BA6F55 #A0BA55

monochromatic

#2B3A6A #3D5395 #556EBA #8193CC #ACB8DD

Accessibility & contrast

On white

4.85

#556EBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#556EBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556EBA

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556EBA	#FFFFFF	#000000	##FFFFFF
##556EBA	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F76BD

Deuteranopia (green-blind)

#436DB8

Tritanopia (blue-blind)

#207F8B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556eba;
/* rgb */ color: rgb(85, 110, 186);
/* oklch */ color: oklch(55.5% 0.122 268.5);

Tailwind

colors: {
  custom: {
    50: '#8c97cf',
    500: '#556eba',
    950: '#000000',
  },
}

SCSS

$custom: #556eba;
$custom-light: #8c97cf;
$custom-dark: #000000;

JSON

{
  "hex": "#556eba",
  "rgb": {
    "r": 85,
    "g": 110,
    "b": 186
  },
  "hsl": {
    "h": 225.149,
    "s": 42.259,
    "l": 53.137
  },
  "oklch": {
    "l": 0.55453,
    "c": 0.12192,
    "h": 268.5
  },
  "luminance": 0.16628
}

Semantic roles & 50–950 ramp

primary

#556EBA

secondary

#CBC0A0

accent

#B356D2

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0D14

muted

#7D7E82

Preview Lab

Preview with #556EBA

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

Preview Lab → · Contrast checker → · Palette generator →