#556BD2#556BD2

#556BD2 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.4% C 0.160 H 271.4°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#556BD2
RGB	rgb(85, 107, 210)
HSL	hsl(229, 58%, 58%)
HSV	hsv(229, 60%, 82%)
CMYK	cmyk(59.5%, 49%, 0%, 17.6%)
CIE-LAB	lab(48.38, 22.98, -55.80)
CIE-LCH	lch(48.38, 60.35, 292.39°)
OKLab	oklab(56.36% 0.0038 -0.1596)
OKLCH	oklch(56.36% 0.16 271.4)
XYZ	xyz(20.6330, 17.0982, 63.1732)
Luminance	0.1710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BD2 #D2BC55

analogous

#55A9D2 #556BD2 #7D55D2

triadic

#556BD2 #D2556B #6BD255

tetradic

#556BD2 #D255A9 #D2BC55 #55D27D

square

#556BD2 #D255A9 #D2BC55 #55D27D

split-complementary

#556BD2 #D27D55 #A9D255

monochromatic

#243688 #3149B9 #556BD2 #8595DF #B6BFEC

Accessibility & contrast

On white

4.75

#556BD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#556BD2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BD2

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BD2	#FFFFFF	#000000	##FFFFFF
##556BD2	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3679D6

Deuteranopia (green-blind)

#1E6ED0

Tritanopia (blue-blind)

#008294

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #556bd2;
/* rgb */ color: rgb(85, 107, 210);
/* oklch */ color: oklch(56.4% 0.160 271.4);

Tailwind

colors: {
  custom: {
    50: '#8f95e0',
    500: '#556bd2',
    950: '#000000',
  },
}

SCSS

$custom: #556bd2;
$custom-light: #8f95e0;
$custom-dark: #000000;

JSON

{
  "hex": "#556bd2",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 210
  },
  "hsl": {
    "h": 229.44,
    "s": 58.14,
    "l": 57.843
  },
  "oklch": {
    "l": 0.56363,
    "c": 0.15962,
    "h": 271.4
  },
  "luminance": 0.171
}

Semantic roles & 50–950 ramp

primary

#556BD2

secondary

#DAD2A8

accent

#C646E1

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556BD2

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

Preview Lab → · Contrast checker → · Palette generator →