#556EB2#556EB2

#556EB2 is a mid, moderate blue. Relative luminance 0.163; OKLCH L 55.0% C 0.110 H 267.5°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#556EB2
RGB	rgb(85, 110, 178)
HSL	hsl(224, 38%, 52%)
HSV	hsv(224, 52%, 70%)
CMYK	cmyk(52.2%, 38.2%, 0%, 30.2%)
CIE-LAB	lab(47.36, 10.56, -39.00)
CIE-LCH	lch(47.36, 40.41, 285.14°)
OKLab	oklab(54.99% -0.0049 -0.1103)
OKLCH	oklch(54.99% 0.11 267.5)
XYZ	xyz(17.3555, 16.2963, 44.3418)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556EB2 #B29955

analogous

#559DB2 #556EB2 #6B55B2

triadic

#556EB2 #B2556E #6EB255

tetradic

#556EB2 #B2559D #B29955 #55B26B

square

#556EB2 #B2559D #B29955 #55B26B

split-complementary

#556EB2 #B26B55 #9DB255

monochromatic

#2C3A61 #3F538B #556EB2 #7F92C5 #A9B6D8

Accessibility & contrast

On white

4.93

#556EB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#556EB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556EB2

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556EB2	#FFFFFF	#000000	##FFFFFF
##556EB2	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5375B5

Deuteranopia (green-blind)

#496CB1

Tritanopia (blue-blind)

#297D87

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #556eb2;
/* rgb */ color: rgb(85, 110, 178);
/* oklch */ color: oklch(55.0% 0.110 267.5);

Tailwind

colors: {
  custom: {
    50: '#8b97c9',
    500: '#556eb2',
    950: '#000000',
  },
}

SCSS

$custom: #556eb2;
$custom-light: #8b97c9;
$custom-dark: #000000;

JSON

{
  "hex": "#556eb2",
  "rgb": {
    "r": 85,
    "g": 110,
    "b": 178
  },
  "hsl": {
    "h": 223.871,
    "s": 37.652,
    "l": 51.569
  },
  "oklch": {
    "l": 0.54986,
    "c": 0.11039,
    "h": 267.5
  },
  "luminance": 0.16298
}

Semantic roles & 50–950 ramp

primary

#556EB2

secondary

#C6BB9D

accent

#AF5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556EB2

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

Preview Lab → · Contrast checker → · Palette generator →