#556BC6#556BC6

#556BC6 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.6% C 0.143 H 270.9°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#556BC6
RGB	rgb(85, 107, 198)
HSL	hsl(228, 50%, 55%)
HSV	hsv(228, 57%, 78%)
CMYK	cmyk(57.1%, 46%, 0%, 22.4%)
CIE-LAB	lab(47.65, 18.98, -50.11)
CIE-LCH	lch(47.65, 53.58, 290.75°)
OKLab	oklab(55.57% 0.0023 -0.1428)
OKLCH	oklch(55.57% 0.143 270.9)
XYZ	xyz(19.1937, 16.5224, 55.5928)
Luminance	0.1652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BC6 #C6B055

analogous

#55A3C6 #556BC6 #7855C6

triadic

#556BC6 #C6556B #6BC655

tetradic

#556BC6 #C655A3 #C6B055 #55C678

square

#556BC6 #C655A3 #C6B055 #55C678

split-complementary

#556BC6 #C67855 #A3C655

monochromatic

#283878 #384DA6 #556BC6 #8393D5 #B1BBE5

Accessibility & contrast

On white

4.88

#556BC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#556BC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BC6

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BC6	#FFFFFF	#000000	##FFFFFF
##556BC6	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4176C9

Deuteranopia (green-blind)

#316CC4

Tritanopia (blue-blind)

#067F8F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556bc6;
/* rgb */ color: rgb(85, 107, 198);
/* oklch */ color: oklch(55.6% 0.143 270.9);

Tailwind

colors: {
  custom: {
    50: '#8e95d8',
    500: '#556bc6',
    950: '#000000',
  },
}

SCSS

$custom: #556bc6;
$custom-light: #8e95d8;
$custom-dark: #000000;

JSON

{
  "hex": "#556bc6",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 198
  },
  "hsl": {
    "h": 228.319,
    "s": 49.78,
    "l": 55.49
  },
  "oklch": {
    "l": 0.55572,
    "c": 0.14285,
    "h": 270.9
  },
  "luminance": 0.16524
}

Semantic roles & 50–950 ramp

primary

#556BC6

secondary

#D3CAA4

accent

#BE4ED9

background

#F9F9FD

surface

#F1F1FA

border

#CBCBD3

text

#0D0D14

muted

#7E7E83

Preview Lab

Preview with #556BC6

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

Preview Lab → · Contrast checker → · Palette generator →