#556BCD#556BCD

#556BCD is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.0% C 0.153 H 271.2°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#556BCD
RGB	rgb(85, 107, 205)
HSL	hsl(229, 55%, 57%)
HSV	hsv(229, 59%, 80%)
CMYK	cmyk(58.5%, 47.8%, 0%, 19.6%)
CIE-LAB	lab(48.07, 21.31, -53.44)
CIE-LCH	lch(48.07, 57.54, 291.74°)
OKLab	oklab(56.03% 0.0032 -0.1526)
OKLCH	oklch(56.03% 0.153 271.2)
XYZ	xyz(20.0198, 16.8529, 59.9437)
Luminance	0.1685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BCD #CDB755

analogous

#55A7CD #556BCD #7B55CD

triadic

#556BCD #CD556B #6BCD55

tetradic

#556BCD #CD55A7 #CDB755 #55CD7B

square

#556BCD #CD55A7 #CDB755 #55CD7B

split-complementary

#556BCD #CD7B55 #A7CD55

monochromatic

#263782 #344BB1 #556BCD #8494DB #B4BDE9

Accessibility & contrast

On white

4.80

#556BCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#556BCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BCD

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BCD	#FFFFFF	#000000	##FFFFFF
##556BCD	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B78D1

Deuteranopia (green-blind)

#276DCB

Tritanopia (blue-blind)

#008192

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #556bcd;
/* rgb */ color: rgb(85, 107, 205);
/* oklch */ color: oklch(56.0% 0.153 271.2);

Tailwind

colors: {
  custom: {
    50: '#8f95dd',
    500: '#556bcd',
    950: '#000000',
  },
}

SCSS

$custom: #556bcd;
$custom-light: #8f95dd;
$custom-dark: #000000;

JSON

{
  "hex": "#556bcd",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 205
  },
  "hsl": {
    "h": 229,
    "s": 54.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.56029,
    "c": 0.15268,
    "h": 271.2
  },
  "luminance": 0.16854
}

Semantic roles & 50–950 ramp

primary

#556BCD

secondary

#D7CEA6

accent

#C34ADE

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556BCD

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

Preview Lab → · Contrast checker → · Palette generator →