#556FB2#556FB2

#556FB2 is a mid, moderate blue. Relative luminance 0.165; OKLCH L 55.2% C 0.109 H 266.8°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#556FB2
RGB	rgb(85, 111, 178)
HSL	hsl(223, 38%, 52%)
HSV	hsv(223, 52%, 70%)
CMYK	cmyk(52.2%, 37.6%, 0%, 30.2%)
CIE-LAB	lab(47.64, 9.94, -38.56)
CIE-LCH	lch(47.64, 39.82, 284.45°)
OKLab	oklab(55.2% -0.0061 -0.109)
OKLCH	oklch(55.2% 0.109 266.8)
XYZ	xyz(17.4640, 16.5133, 44.3780)
Luminance	0.1651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556FB2 #B29855

analogous

#559EB2 #556FB2 #6A55B2

triadic

#556FB2 #B2556F #6FB255

tetradic

#556FB2 #B2559E #B29855 #55B26A

square

#556FB2 #B2559E #B29855 #55B26A

split-complementary

#556FB2 #B26A55 #9EB255

monochromatic

#2C3B61 #3F548B #556FB2 #7F93C5 #A9B6D8

Accessibility & contrast

On white

4.88

#556FB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#556FB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556FB2

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556FB2	#FFFFFF	#000000	##FFFFFF
##556FB2	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5576B5

Deuteranopia (green-blind)

#4A6DB1

Tritanopia (blue-blind)

#297D88

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556fb2;
/* rgb */ color: rgb(85, 111, 178);
/* oklch */ color: oklch(55.2% 0.109 266.8);

Tailwind

colors: {
  custom: {
    50: '#8b98c9',
    500: '#556fb2',
    950: '#000000',
  },
}

SCSS

$custom: #556fb2;
$custom-light: #8b98c9;
$custom-dark: #000000;

JSON

{
  "hex": "#556fb2",
  "rgb": {
    "r": 85,
    "g": 111,
    "b": 178
  },
  "hsl": {
    "h": 223.226,
    "s": 37.652,
    "l": 51.569
  },
  "oklch": {
    "l": 0.55203,
    "c": 0.10915,
    "h": 266.8
  },
  "luminance": 0.16515
}

Semantic roles & 50–950 ramp

primary

#556FB2

secondary

#C6BA9D

accent

#AD5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556FB2

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

Preview Lab → · Contrast checker → · Palette generator →