#556DCB#556DCB

#556DCB is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.3% C 0.147 H 270.3°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#556DCB
RGB	rgb(85, 109, 203)
HSL	hsl(228, 53%, 56%)
HSV	hsv(228, 58%, 80%)
CMYK	cmyk(58.1%, 46.3%, 0%, 20.4%)
CIE-LAB	lab(48.48, 19.40, -51.64)
CIE-LCH	lch(48.48, 55.17, 290.59°)
OKLab	oklab(56.3% 0.0008 -0.1473)
OKLCH	oklch(56.3% 0.147 270.3)
XYZ	xyz(19.9909, 17.1788, 58.7507)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556DCB #CBB355

analogous

#55A8CB #556DCB #7855CB

triadic

#556DCB #CB556D #6DCB55

tetradic

#556DCB #CB55A8 #CBB355 #55CB78

square

#556DCB #CB55A8 #CBB355 #55CB78

split-complementary

#556DCB #CB7855 #A8CB55

monochromatic

#27397F #354EAE #556DCB #8495D9 #B3BDE8

Accessibility & contrast

On white

4.73

#556DCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#556DCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556DCB

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556DCB	#FFFFFF	#000000	##FFFFFF
##556DCB	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4179CE

Deuteranopia (green-blind)

#2F6EC9

Tritanopia (blue-blind)

#008292

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #556dcb;
/* rgb */ color: rgb(85, 109, 203);
/* oklch */ color: oklch(56.3% 0.147 270.3);

Tailwind

colors: {
  custom: {
    50: '#8e96db',
    500: '#556dcb',
    950: '#000000',
  },
}

SCSS

$custom: #556dcb;
$custom-light: #8e96db;
$custom-dark: #000000;

JSON

{
  "hex": "#556dcb",
  "rgb": {
    "r": 85,
    "g": 109,
    "b": 203
  },
  "hsl": {
    "h": 227.797,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56302,
    "c": 0.14733,
    "h": 270.3
  },
  "luminance": 0.1718
}

Semantic roles & 50–950 ramp

primary

#556DCB

secondary

#D6CCA6

accent

#BF4BDD

background

#F9F9FD

surface

#F1F1FB

border

#CBCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556DCB

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

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