#556ECF#556ECF

#556ECF is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.8% C 0.152 H 270.1°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#556ECF
RGB	rgb(85, 110, 207)
HSL	hsl(228, 56%, 57%)
HSV	hsv(228, 59%, 81%)
CMYK	cmyk(58.9%, 46.9%, 0%, 18.8%)
CIE-LAB	lab(48.99, 20.12, -53.12)
CIE-LCH	lch(48.99, 56.80, 290.74°)
OKLab	oklab(56.77% 0.0003 -0.1516)
OKLCH	oklch(56.77% 0.152 270.1)
XYZ	xyz(20.5810, 17.5865, 61.3294)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556ECF #CFB655

analogous

#55ABCF #556ECF #7955CF

triadic

#556ECF #CF556E #6ECF55

tetradic

#556ECF #CF55AB #CFB655 #55CF79

square

#556ECF #CF55AB #CFB655 #55CF79

split-complementary

#556ECF #CF7955 #ABCF55

monochromatic

#253984 #334DB4 #556ECF #8597DC #B4BFEA

Accessibility & contrast

On white

4.65

#556ECF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#556ECF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #556ECF

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556ECF	#FFFFFF	#000000	##FFFFFF
##556ECF	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7AD3

Deuteranopia (green-blind)

#2C6FCD

Tritanopia (blue-blind)

#008494

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #556ecf;
/* rgb */ color: rgb(85, 110, 207);
/* oklch */ color: oklch(56.8% 0.152 270.1);

Tailwind

colors: {
  custom: {
    50: '#8f97de',
    500: '#556ecf',
    950: '#000000',
  },
}

SCSS

$custom: #556ecf;
$custom-light: #8f97de;
$custom-dark: #000000;

JSON

{
  "hex": "#556ecf",
  "rgb": {
    "r": 85,
    "g": 110,
    "b": 207
  },
  "hsl": {
    "h": 227.705,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56765,
    "c": 0.15165,
    "h": 270.1
  },
  "luminance": 0.17588
}

Semantic roles & 50–950 ramp

primary

#556ECF

secondary

#D9CEA7

accent

#C049DF

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #556ECF

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

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