#556BD3#556BD3

#556BD3 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.4% C 0.161 H 271.4°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#556BD3
RGB	rgb(85, 107, 211)
HSL	hsl(230, 59%, 58%)
HSV	hsv(230, 60%, 83%)
CMYK	cmyk(59.7%, 49.3%, 0%, 17.3%)
CIE-LAB	lab(48.45, 23.32, -56.27)
CIE-LCH	lch(48.45, 60.91, 292.51°)
OKLab	oklab(56.43% 0.0039 -0.161)
OKLCH	oklch(56.43% 0.161 271.4)
XYZ	xyz(20.7580, 17.1482, 63.8314)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BD3 #D3BD55

analogous

#55AAD3 #556BD3 #7E55D3

triadic

#556BD3 #D3556B #6BD355

tetradic

#556BD3 #D355AA #D3BD55 #55D37E

square

#556BD3 #D355AA #D3BD55 #55D37E

split-complementary

#556BD3 #D37E55 #AAD355

monochromatic

#24368A #3048BB #556BD3 #8695E0 #B6C0EC

Accessibility & contrast

On white

4.74

#556BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#556BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BD3

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BD3	#FFFFFF	#000000	##FFFFFF
##556BD3	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3579D7

Deuteranopia (green-blind)

#1C6ED1

Tritanopia (blue-blind)

#008395

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #556bd3;
/* rgb */ color: rgb(85, 107, 211);
/* oklch */ color: oklch(56.4% 0.161 271.4);

Tailwind

colors: {
  custom: {
    50: '#9095e1',
    500: '#556bd3',
    950: '#000000',
  },
}

SCSS

$custom: #556bd3;
$custom-light: #9095e1;
$custom-dark: #000000;

JSON

{
  "hex": "#556bd3",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 211
  },
  "hsl": {
    "h": 229.524,
    "s": 58.879,
    "l": 58.039
  },
  "oklch": {
    "l": 0.56431,
    "c": 0.16101,
    "h": 271.4
  },
  "luminance": 0.1715
}

Semantic roles & 50–950 ramp

primary

#556BD3

secondary

#DBD2A9

accent

#C746E2

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556BD3

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

Preview Lab → · Contrast checker → · Palette generator →