#556BB0#556BB0

#556BB0 is a mid, moderate blue. Relative luminance 0.156; OKLCH L 54.2% C 0.111 H 269.1°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#556BB0
RGB	rgb(85, 107, 176)
HSL	hsl(225, 37%, 51%)
HSV	hsv(225, 52%, 69%)
CMYK	cmyk(51.7%, 39.2%, 0%, 31%)
CIE-LAB	lab(46.42, 11.77, -39.33)
CIE-LCH	lch(46.42, 41.05, 286.66°)
OKLab	oklab(54.23% -0.0017 -0.1112)
OKLCH	oklch(54.23% 0.111 269.1)
XYZ	xyz(16.8379, 15.5801, 43.1859)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BB0 #B09A55

analogous

#5598B0 #556BB0 #6C55B0

triadic

#556BB0 #B0556B #6BB055

tetradic

#556BB0 #B05598 #B09A55 #55B06C

square

#556BB0 #B05598 #B09A55 #55B06C

split-complementary

#556BB0 #B06C55 #98B055

monochromatic

#2C385F #3F5188 #556BB0 #7F8FC3 #A9B4D7

Accessibility & contrast

On white

5.10

#556BB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#556BB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BB0

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BB0	#FFFFFF	#000000	##FFFFFF
##556BB0	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5072B3

Deuteranopia (green-blind)

#466AAE

Tritanopia (blue-blind)

#2C7A85

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #556bb0;
/* rgb */ color: rgb(85, 107, 176);
/* oklch */ color: oklch(54.2% 0.111 269.1);

Tailwind

colors: {
  custom: {
    50: '#8b95c8',
    500: '#556bb0',
    950: '#000000',
  },
}

SCSS

$custom: #556bb0;
$custom-light: #8b95c8;
$custom-dark: #000000;

JSON

{
  "hex": "#556bb0",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 176
  },
  "hsl": {
    "h": 225.495,
    "s": 36.546,
    "l": 51.176
  },
  "oklch": {
    "l": 0.54225,
    "c": 0.11126,
    "h": 269.1
  },
  "luminance": 0.15581
}

Semantic roles & 50–950 ramp

primary

#556BB0

secondary

#C5BB9C

accent

#B15BCD

background

#F8F9FC

surface

#F0F1F8

border

#CBCBD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556BB0

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

Preview Lab → · Contrast checker → · Palette generator →