#556FB3#556FB3

#556FB3 is a mid, moderate blue. Relative luminance 0.166; OKLCH L 55.3% C 0.111 H 267.0°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#556FB3
RGB	rgb(85, 111, 179)
HSL	hsl(223, 38%, 52%)
HSV	hsv(223, 53%, 70%)
CMYK	cmyk(52.5%, 38%, 0%, 29.8%)
CIE-LAB	lab(47.69, 10.26, -39.06)
CIE-LCH	lch(47.69, 40.39, 284.72°)
OKLab	oklab(55.26% -0.0059 -0.1104)
OKLCH	oklch(55.26% 0.111 267)
XYZ	xyz(17.5648, 16.5536, 44.9087)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556FB3 #B39955

analogous

#559EB3 #556FB3 #6A55B3

triadic

#556FB3 #B3556F #6FB355

tetradic

#556FB3 #B3559E #B39955 #55B36A

square

#556FB3 #B3559E #B39955 #55B36A

split-complementary

#556FB3 #B36A55 #9EB355

monochromatic

#2C3B62 #3F548C #556FB3 #7F93C6 #AAB7D9

Accessibility & contrast

On white

4.87

#556FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#556FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556FB3

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556FB3	#FFFFFF	#000000	##FFFFFF
##556FB3	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5476B6

Deuteranopia (green-blind)

#496DB2

Tritanopia (blue-blind)

#287E88

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556fb3;
/* rgb */ color: rgb(85, 111, 179);
/* oklch */ color: oklch(55.3% 0.111 267.0);

Tailwind

colors: {
  custom: {
    50: '#8b98ca',
    500: '#556fb3',
    950: '#000000',
  },
}

SCSS

$custom: #556fb3;
$custom-light: #8b98ca;
$custom-dark: #000000;

JSON

{
  "hex": "#556fb3",
  "rgb": {
    "r": 85,
    "g": 111,
    "b": 179
  },
  "hsl": {
    "h": 223.404,
    "s": 38.211,
    "l": 51.765
  },
  "oklch": {
    "l": 0.5526,
    "c": 0.1106,
    "h": 267
  },
  "luminance": 0.16555
}

Semantic roles & 50–950 ramp

primary

#556FB3

secondary

#C7BB9D

accent

#AE5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556FB3

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

Preview Lab → · Contrast checker → · Palette generator →