#556FB1#556FB1

#556FB1 is a mid, moderate blue. Relative luminance 0.165; OKLCH L 55.1% C 0.108 H 266.6°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#556FB1
RGB	rgb(85, 111, 177)
HSL	hsl(223, 37%, 51%)
HSV	hsv(223, 52%, 69%)
CMYK	cmyk(52%, 37.3%, 0%, 30.6%)
CIE-LAB	lab(47.59, 9.62, -38.06)
CIE-LCH	lch(47.59, 39.26, 284.18°)
OKLab	oklab(55.15% -0.0063 -0.1075)
OKLCH	oklch(55.15% 0.108 266.6)
XYZ	xyz(17.3639, 16.4733, 43.8511)
Luminance	0.1647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556FB1 #B19755

analogous

#559DB1 #556FB1 #6955B1

triadic

#556FB1 #B1556F #6FB155

tetradic

#556FB1 #B1559D #B19755 #55B169

square

#556FB1 #B1559D #B19755 #55B169

split-complementary

#556FB1 #B16955 #9DB155

monochromatic

#2C3B60 #3F548A #556FB1 #7F93C4 #A9B6D7

Accessibility & contrast

On white

4.89

#556FB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#556FB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556FB1

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556FB1	#FFFFFF	#000000	##FFFFFF
##556FB1	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5575B4

Deuteranopia (green-blind)

#4B6DB0

Tritanopia (blue-blind)

#2A7D87

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556fb1;
/* rgb */ color: rgb(85, 111, 177);
/* oklch */ color: oklch(55.1% 0.108 266.6);

Tailwind

colors: {
  custom: {
    50: '#8b98c8',
    500: '#556fb1',
    950: '#000000',
  },
}

SCSS

$custom: #556fb1;
$custom-light: #8b98c8;
$custom-dark: #000000;

JSON

{
  "hex": "#556fb1",
  "rgb": {
    "r": 85,
    "g": 111,
    "b": 177
  },
  "hsl": {
    "h": 223.043,
    "s": 37.097,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55146,
    "c": 0.10771,
    "h": 266.6
  },
  "luminance": 0.16474
}

Semantic roles & 50–950 ramp

primary

#556FB1

secondary

#C5BA9D

accent

#AD5BCD

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556FB1

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

Preview Lab → · Contrast checker → · Palette generator →