#556BC7#556BC7

#556BC7 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.6% C 0.144 H 271.0°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#556BC7
RGB	rgb(85, 107, 199)
HSL	hsl(228, 50%, 56%)
HSV	hsv(228, 57%, 78%)
CMYK	cmyk(57.3%, 46.2%, 0%, 22%)
CIE-LAB	lab(47.71, 19.31, -50.59)
CIE-LCH	lch(47.71, 54.15, 290.89°)
OKLab	oklab(55.64% 0.0024 -0.1442)
OKLCH	oklch(55.64% 0.144 271)
XYZ	xyz(19.3094, 16.5687, 56.2023)
Luminance	0.1657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BC7 #C7B155

analogous

#55A4C7 #556BC7 #7855C7

triadic

#556BC7 #C7556B #6BC755

tetradic

#556BC7 #C755A4 #C7B155 #55C778

square

#556BC7 #C755A4 #C7B155 #55C778

split-complementary

#556BC7 #C77855 #A4C755

monochromatic

#28387A #374DA8 #556BC7 #8393D6 #B1BBE5

Accessibility & contrast

On white

4.87

#556BC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#556BC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BC7

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BC7	#FFFFFF	#000000	##FFFFFF
##556BC7	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)

#4076CA

Deuteranopia (green-blind)

#306CC5

Tritanopia (blue-blind)

#027F8F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556bc7;
/* rgb */ color: rgb(85, 107, 199);
/* oklch */ color: oklch(55.6% 0.144 271.0);

Tailwind

colors: {
  custom: {
    50: '#8e95d8',
    500: '#556bc7',
    950: '#000000',
  },
}

SCSS

$custom: #556bc7;
$custom-light: #8e95d8;
$custom-dark: #000000;

JSON

{
  "hex": "#556bc7",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 199
  },
  "hsl": {
    "h": 228.421,
    "s": 50.442,
    "l": 55.686
  },
  "oklch": {
    "l": 0.55636,
    "c": 0.14426,
    "h": 271
  },
  "luminance": 0.1657
}

Semantic roles & 50–950 ramp

primary

#556BC7

secondary

#D4CAA4

accent

#BF4EDA

background

#F9F9FD

surface

#F1F1FA

border

#CBCBD3

text

#0D0D14

muted

#7E7E83

Preview Lab

Preview with #556BC7

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

Preview Lab → · Contrast checker → · Palette generator →