#556BB5#556BB5

#556BB5 is a mid, moderate blue. Relative luminance 0.158; OKLCH L 54.5% C 0.119 H 269.7°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#556BB5
RGB	rgb(85, 107, 181)
HSL	hsl(226, 39%, 52%)
HSV	hsv(226, 53%, 71%)
CMYK	cmyk(53%, 40.9%, 0%, 29%)
CIE-LAB	lab(46.69, 13.39, -41.82)
CIE-LCH	lch(46.69, 43.91, 287.75°)
OKLab	oklab(54.52% -0.0007 -0.1185)
OKLCH	oklch(54.52% 0.119 269.7)
XYZ	xyz(17.3418, 15.7817, 45.8394)
Luminance	0.1578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BB5 #B59F55

analogous

#559BB5 #556BB5 #6F55B5

triadic

#556BB5 #B5556B #6BB555

tetradic

#556BB5 #B5559B #B59F55 #55B56F

square

#556BB5 #B5559B #B59F55 #55B56F

split-complementary

#556BB5 #B56F55 #9BB555

monochromatic

#2C3864 #3E518F #556BB5 #8090C8 #AAB5DA

Accessibility & contrast

On white

5.05

#556BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#556BB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BB5

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BB5	#FFFFFF	#000000	##FFFFFF
##556BB5	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)

#4D73B8

Deuteranopia (green-blind)

#426BB3

Tritanopia (blue-blind)

#277B87

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #556bb5;
/* rgb */ color: rgb(85, 107, 181);
/* oklch */ color: oklch(54.5% 0.119 269.7);

Tailwind

colors: {
  custom: {
    50: '#8b95cb',
    500: '#556bb5',
    950: '#000000',
  },
}

SCSS

$custom: #556bb5;
$custom-light: #8b95cb;
$custom-dark: #000000;

JSON

{
  "hex": "#556bb5",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 181
  },
  "hsl": {
    "h": 226.25,
    "s": 39.344,
    "l": 52.157
  },
  "oklch": {
    "l": 0.54519,
    "c": 0.11852,
    "h": 269.7
  },
  "luminance": 0.15783
}

Semantic roles & 50–950 ramp

primary

#556BB5

secondary

#C8BE9E

accent

#B459CF

background

#F8F9FC

surface

#F0F1F8

border

#CBCBD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556BB5

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

Preview Lab → · Contrast checker → · Palette generator →