#556CB0#556CB0

#556CB0 is a mid, moderate blue. Relative luminance 0.158; OKLCH L 54.4% C 0.110 H 268.5°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#556CB0
RGB	rgb(85, 108, 176)
HSL	hsl(225, 37%, 51%)
HSV	hsv(225, 52%, 69%)
CMYK	cmyk(51.7%, 38.6%, 0%, 31%)
CIE-LAB	lab(46.70, 11.15, -38.89)
CIE-LCH	lch(46.70, 40.45, 286.00°)
OKLab	oklab(54.44% -0.0029 -0.1099)
OKLCH	oklch(54.44% 0.11 268.5)
XYZ	xyz(16.9428, 15.7899, 43.2208)
Luminance	0.1579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556CB0 #B09955

analogous

#5599B0 #556CB0 #6B55B0

triadic

#556CB0 #B0556C #6CB055

tetradic

#556CB0 #B05599 #B09955 #55B06B

square

#556CB0 #B05599 #B09955 #55B06B

split-complementary

#556CB0 #B06B55 #99B055

monochromatic

#2C395F #3F5288 #556CB0 #7F90C3 #A9B4D7

Accessibility & contrast

On white

5.05

#556CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#556CB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556CB0

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556CB0	#FFFFFF	#000000	##FFFFFF
##556CB0	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5173B3

Deuteranopia (green-blind)

#476BAF

Tritanopia (blue-blind)

#2C7B85

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #556cb0;
/* rgb */ color: rgb(85, 108, 176);
/* oklch */ color: oklch(54.4% 0.110 268.5);

Tailwind

colors: {
  custom: {
    50: '#8b95c8',
    500: '#556cb0',
    950: '#000000',
  },
}

SCSS

$custom: #556cb0;
$custom-light: #8b95c8;
$custom-dark: #000000;

JSON

{
  "hex": "#556cb0",
  "rgb": {
    "r": 85,
    "g": 108,
    "b": 176
  },
  "hsl": {
    "h": 224.835,
    "s": 36.546,
    "l": 51.176
  },
  "oklch": {
    "l": 0.5444,
    "c": 0.10999,
    "h": 268.5
  },
  "luminance": 0.15791
}

Semantic roles & 50–950 ramp

primary

#556CB0

secondary

#C5BA9C

accent

#B05BCD

background

#F8F9FC

surface

#F0F1F8

border

#CBCBD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556CB0

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

Preview Lab → · Contrast checker → · Palette generator →