#556BD9#556BD9

#556BD9 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.8% C 0.169 H 271.5°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#556BD9
RGB	rgb(85, 107, 217)
HSL	hsl(230, 63%, 59%)
HSV	hsv(230, 61%, 85%)
CMYK	cmyk(60.8%, 50.7%, 0%, 14.9%)
CIE-LAB	lab(48.83, 25.34, -59.07)
CIE-LCH	lch(48.83, 64.27, 293.21°)
OKLab	oklab(56.84% 0.0045 -0.1692)
OKLCH	oklch(56.84% 0.169 271.5)
XYZ	xyz(21.5242, 17.4547, 67.8670)
Luminance	0.1746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BD9 #D9C355

analogous

#55ADD9 #556BD9 #8155D9

triadic

#556BD9 #D9556B #6BD955

tetradic

#556BD9 #D955AD #D9C355 #55D981

square

#556BD9 #D955AD #D9C355 #55D981

split-complementary

#556BD9 #D98155 #ADD955

monochromatic

#213493 #2C45C5 #556BD9 #8797E4 #B9C2EF

Accessibility & contrast

On white

4.68

#556BD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#556BD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BD9

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BD9	#FFFFFF	#000000	##FFFFFF
##556BD9	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D7ADD

Deuteranopia (green-blind)

#066ED7

Tritanopia (blue-blind)

#008498

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #556bd9;
/* rgb */ color: rgb(85, 107, 217);
/* oklch */ color: oklch(56.8% 0.169 271.5);

Tailwind

colors: {
  custom: {
    50: '#9195e5',
    500: '#556bd9',
    950: '#000000',
  },
}

SCSS

$custom: #556bd9;
$custom-light: #9195e5;
$custom-dark: #000000;

JSON

{
  "hex": "#556bd9",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 217
  },
  "hsl": {
    "h": 230,
    "s": 63.462,
    "l": 59.216
  },
  "oklch": {
    "l": 0.56842,
    "c": 0.16925,
    "h": 271.5
  },
  "luminance": 0.17456
}

Semantic roles & 50–950 ramp

primary

#556BD9

secondary

#DFD6AB

accent

#CB41E6

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #556BD9

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

Preview Lab → · Contrast checker → · Palette generator →