#556DCF#556DCF

#556DCF is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.6% C 0.153 H 270.5°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#556DCF
RGB	rgb(85, 109, 207)
HSL	hsl(228, 56%, 57%)
HSV	hsv(228, 59%, 81%)
CMYK	cmyk(58.9%, 47.3%, 0%, 18.8%)
CIE-LAB	lab(48.73, 20.74, -53.54)
CIE-LCH	lch(48.73, 57.42, 291.17°)
OKLab	oklab(56.56% 0.0014 -0.1529)
OKLCH	oklch(56.56% 0.153 270.5)
XYZ	xyz(20.4737, 17.3719, 61.2936)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556DCF #CFB755

analogous

#55AACF #556DCF #7A55CF

triadic

#556DCF #CF556D #6DCF55

tetradic

#556DCF #CF55AA #CFB755 #55CF7A

square

#556DCF #CF55AA #CFB755 #55CF7A

split-complementary

#556DCF #CF7A55 #AACF55

monochromatic

#253884 #334CB4 #556DCF #8596DC #B4BFEA

Accessibility & contrast

On white

4.69

#556DCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#556DCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556DCF

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556DCF	#FFFFFF	#000000	##FFFFFF
##556DCF	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D79D3

Deuteranopia (green-blind)

#2A6FCD

Tritanopia (blue-blind)

#008394

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #556dcf;
/* rgb */ color: rgb(85, 109, 207);
/* oklch */ color: oklch(56.6% 0.153 270.5);

Tailwind

colors: {
  custom: {
    50: '#8f96de',
    500: '#556dcf',
    950: '#000000',
  },
}

SCSS

$custom: #556dcf;
$custom-light: #8f96de;
$custom-dark: #000000;

JSON

{
  "hex": "#556dcf",
  "rgb": {
    "r": 85,
    "g": 109,
    "b": 207
  },
  "hsl": {
    "h": 228.197,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56563,
    "c": 0.15292,
    "h": 270.5
  },
  "luminance": 0.17374
}

Semantic roles & 50–950 ramp

primary

#556DCF

secondary

#D9CFA7

accent

#C249DF

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556DCF

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

Preview Lab → · Contrast checker → · Palette generator →