#556ECB#556ECB

#556ECB is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.5% C 0.146 H 269.9°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#556ECB
RGB	rgb(85, 110, 203)
HSL	hsl(227, 53%, 56%)
HSV	hsv(227, 58%, 80%)
CMYK	cmyk(58.1%, 45.8%, 0%, 20.4%)
CIE-LAB	lab(48.75, 18.78, -51.21)
CIE-LCH	lch(48.75, 54.55, 290.14°)
OKLab	oklab(56.51% -0.0002 -0.1461)
OKLCH	oklch(56.51% 0.146 269.9)
XYZ	xyz(20.0981, 17.3934, 58.7865)
Luminance	0.1739 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556ECB #CBB255

analogous

#55A9CB #556ECB #7755CB

triadic

#556ECB #CB556E #6ECB55

tetradic

#556ECB #CB55A9 #CBB255 #55CB77

square

#556ECB #CB55A9 #CBB255 #55CB77

split-complementary

#556ECB #CB7755 #A9CB55

monochromatic

#27397F #354FAE #556ECB #8496D9 #B3BEE8

Accessibility & contrast

On white

4.69

#556ECB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#556ECB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556ECB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556ECB	#FFFFFF	#000000	##FFFFFF
##556ECB	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4379CE

Deuteranopia (green-blind)

#326FC9

Tritanopia (blue-blind)

#008393

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #556ecb;
/* rgb */ color: rgb(85, 110, 203);
/* oklch */ color: oklch(56.5% 0.146 269.9);

Tailwind

colors: {
  custom: {
    50: '#8e97db',
    500: '#556ecb',
    950: '#000000',
  },
}

SCSS

$custom: #556ecb;
$custom-light: #8e97db;
$custom-dark: #000000;

JSON

{
  "hex": "#556ecb",
  "rgb": {
    "r": 85,
    "g": 110,
    "b": 203
  },
  "hsl": {
    "h": 227.288,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56506,
    "c": 0.14606,
    "h": 269.9
  },
  "luminance": 0.17395
}

Semantic roles & 50–950 ramp

primary

#556ECB

secondary

#D6CCA6

accent

#BE4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556ECB

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

Preview Lab → · Contrast checker → · Palette generator →