#556BCF#556BCF

#556BCF is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.2% C 0.155 H 271.3°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#556BCF
RGB	rgb(85, 107, 207)
HSL	hsl(229, 56%, 57%)
HSV	hsv(229, 59%, 81%)
CMYK	cmyk(58.9%, 48.3%, 0%, 18.8%)
CIE-LAB	lab(48.20, 21.98, -54.39)
CIE-LCH	lch(48.20, 58.66, 292.00°)
OKLab	oklab(56.16% 0.0034 -0.1554)
OKLCH	oklch(56.16% 0.155 271.3)
XYZ	xyz(20.2628, 16.9501, 61.2233)
Luminance	0.1695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BCF #CFB955

analogous

#55A8CF #556BCF #7C55CF

triadic

#556BCF #CF556B #6BCF55

tetradic

#556BCF #CF55A8 #CFB955 #55CF7C

square

#556BCF #CF55A8 #CFB955 #55CF7C

split-complementary

#556BCF #CF7C55 #A8CF55

monochromatic

#253684 #334AB4 #556BCF #8595DC #B4BEEA

Accessibility & contrast

On white

4.78

#556BCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#556BCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BCF

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BCF	#FFFFFF	#000000	##FFFFFF
##556BCF	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3978D3

Deuteranopia (green-blind)

#246DCD

Tritanopia (blue-blind)

#008293

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #556bcf;
/* rgb */ color: rgb(85, 107, 207);
/* oklch */ color: oklch(56.2% 0.155 271.3);

Tailwind

colors: {
  custom: {
    50: '#8f95de',
    500: '#556bcf',
    950: '#000000',
  },
}

SCSS

$custom: #556bcf;
$custom-light: #8f95de;
$custom-dark: #000000;

JSON

{
  "hex": "#556bcf",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 207
  },
  "hsl": {
    "h": 229.18,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56162,
    "c": 0.15547,
    "h": 271.3
  },
  "luminance": 0.16952
}

Semantic roles & 50–950 ramp

primary

#556BCF

secondary

#D9D0A7

accent

#C449DF

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556BCF

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

Preview Lab → · Contrast checker → · Palette generator →