#556FCB#556FCB

#556FCB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.7% C 0.145 H 269.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#556FCB
RGB	rgb(85, 111, 203)
HSL	hsl(227, 53%, 56%)
HSV	hsv(227, 58%, 80%)
CMYK	cmyk(58.1%, 45.3%, 0%, 20.4%)
CIE-LAB	lab(49.02, 18.16, -50.79)
CIE-LCH	lch(49.02, 53.93, 289.67°)
OKLab	oklab(56.71% -0.0013 -0.1448)
OKLCH	oklch(56.71% 0.145 269.5)
XYZ	xyz(20.2066, 17.6104, 58.8226)
Luminance	0.1761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556FCB #CBB155

analogous

#55AACB #556FCB #7655CB

triadic

#556FCB #CB556F #6FCB55

tetradic

#556FCB #CB55AA #CBB155 #55CB76

square

#556FCB #CB55AA #CBB155 #55CB76

split-complementary

#556FCB #CB7655 #AACB55

monochromatic

#273A7F #3550AE #556FCB #8497D9 #B3BEE8

Accessibility & contrast

On white

4.64

#556FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#556FCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #556FCB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556FCB	#FFFFFF	#000000	##FFFFFF
##556FCB	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#457ACE

Deuteranopia (green-blind)

#3470C9

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #556fcb;
/* rgb */ color: rgb(85, 111, 203);
/* oklch */ color: oklch(56.7% 0.145 269.5);

Tailwind

colors: {
  custom: {
    50: '#8e98db',
    500: '#556fcb',
    950: '#000000',
  },
}

SCSS

$custom: #556fcb;
$custom-light: #8e98db;
$custom-dark: #000000;

JSON

{
  "hex": "#556fcb",
  "rgb": {
    "r": 85,
    "g": 111,
    "b": 203
  },
  "hsl": {
    "h": 226.78,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56711,
    "c": 0.1448,
    "h": 269.5
  },
  "luminance": 0.17612
}

Semantic roles & 50–950 ramp

primary

#556FCB

secondary

#D6CBA6

accent

#BD4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556FCB

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

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