#556BDB#556BDB

#556BDB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 57.0% C 0.172 H 271.5°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#556BDB
RGB	rgb(85, 107, 219)
HSL	hsl(230, 65%, 60%)
HSV	hsv(230, 61%, 86%)
CMYK	cmyk(61.2%, 51.1%, 0%, 14.1%)
CIE-LAB	lab(48.96, 26.01, -60.00)
CIE-LCH	lch(48.96, 65.39, 293.44°)
OKLab	oklab(56.98% 0.0046 -0.1719)
OKLCH	oklch(56.98% 0.172 271.5)
XYZ	xyz(21.7859, 17.5593, 69.2453)
Luminance	0.1756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BDB #DBC555

analogous

#55AEDB #556BDB #8255DB

triadic

#556BDB #DB556B #6BDB55

tetradic

#556BDB #DB55AE #DBC555 #55DB82

square

#556BDB #DB55AE #DBC555 #55DB82

split-complementary

#556BDB #DB8255 #AEDB55

monochromatic

#203396 #2A44C8 #556BDB #8897E6 #BAC3F0

Accessibility & contrast

On white

4.65

#556BDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#556BDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #556BDB

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BDB	#FFFFFF	#000000	##FFFFFF
##556BDB	1.00	4.65	4.51	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A7ADF

Deuteranopia (green-blind)

#006FD9

Tritanopia (blue-blind)

#008599

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #556bdb;
/* rgb */ color: rgb(85, 107, 219);
/* oklch */ color: oklch(57.0% 0.172 271.5);

Tailwind

colors: {
  custom: {
    50: '#9195e7',
    500: '#556bdb',
    950: '#000000',
  },
}

SCSS

$custom: #556bdb;
$custom-light: #9195e7;
$custom-dark: #000000;

JSON

{
  "hex": "#556bdb",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 219
  },
  "hsl": {
    "h": 230.149,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.56981,
    "c": 0.17198,
    "h": 271.5
  },
  "luminance": 0.17561
}

Semantic roles & 50–950 ramp

primary

#556BDB

secondary

#E0D7AC

accent

#CC40E8

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #556BDB

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

Preview Lab → · Contrast checker → · Palette generator →