#556BBF#556BBF

#556BBF is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.1% C 0.133 H 270.5°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#556BBF
RGB	rgb(85, 107, 191)
HSL	hsl(228, 45%, 54%)
HSV	hsv(228, 55%, 75%)
CMYK	cmyk(55.5%, 44%, 0%, 25.1%)
CIE-LAB	lab(47.24, 16.66, -46.72)
CIE-LCH	lch(47.24, 49.61, 289.63°)
OKLab	oklab(55.13% 0.0012 -0.1329)
OKLCH	oklch(55.13% 0.133 270.5)
XYZ	xyz(18.4049, 16.2069, 51.4385)
Luminance	0.1621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BBF #BFA955

analogous

#55A0BF #556BBF #7455BF

triadic

#556BBF #BF556B #6BBF55

tetradic

#556BBF #BF55A0 #BFA955 #55BF74

square

#556BBF #BF55A0 #BFA955 #55BF74

split-complementary

#556BBF #BF7455 #A0BF55

monochromatic

#2A3870 #3B4F9C #556BBF #8192D0 #AEB8E0

Accessibility & contrast

On white

4.95

#556BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#556BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BBF

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BBF	#FFFFFF	#000000	##FFFFFF
##556BBF	1.00	4.95	4.24	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4675C2

Deuteranopia (green-blind)

#396CBD

Tritanopia (blue-blind)

#197D8C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #556bbf;
/* rgb */ color: rgb(85, 107, 191);
/* oklch */ color: oklch(55.1% 0.133 270.5);

Tailwind

colors: {
  custom: {
    50: '#8d95d3',
    500: '#556bbf',
    950: '#000000',
  },
}

SCSS

$custom: #556bbf;
$custom-light: #8d95d3;
$custom-dark: #000000;

JSON

{
  "hex": "#556bbf",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 191
  },
  "hsl": {
    "h": 227.547,
    "s": 45.299,
    "l": 54.118
  },
  "oklch": {
    "l": 0.55128,
    "c": 0.13292,
    "h": 270.5
  },
  "luminance": 0.16208
}

Semantic roles & 50–950 ramp

primary

#556BBF

secondary

#CEC5A1

accent

#BA53D5

background

#F9F9FD

surface

#F1F1FA

border

#CBCBD3

text

#0D0D14

muted

#7E7E83

Preview Lab

Preview with #556BBF

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

Preview Lab → · Contrast checker → · Palette generator →