#556BB7#556BB7

#556BB7 is a mid, vivid blue. Relative luminance 0.159; OKLCH L 54.6% C 0.121 H 269.9°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#556BB7
RGB	rgb(85, 107, 183)
HSL	hsl(227, 40%, 53%)
HSV	hsv(227, 54%, 72%)
CMYK	cmyk(53.6%, 41.5%, 0%, 28.2%)
CIE-LAB	lab(46.80, 14.04, -42.80)
CIE-LCH	lch(46.80, 45.05, 288.16°)
OKLab	oklab(54.64% -0.0003 -0.1214)
OKLCH	oklch(54.64% 0.121 269.9)
XYZ	xyz(17.5485, 15.8644, 46.9280)
Luminance	0.1587 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BB7 #B7A155

analogous

#559CB7 #556BB7 #7055B7

triadic

#556BB7 #B7556B #6BB755

tetradic

#556BB7 #B7559C #B7A155 #55B770

square

#556BB7 #B7559C #B7A155 #55B770

split-complementary

#556BB7 #B77055 #9CB755

monochromatic

#2B3966 #3E5091 #556BB7 #8090C9 #ABB6DB

Accessibility & contrast

On white

5.03

#556BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#556BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556BB7

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BB7	#FFFFFF	#000000	##FFFFFF
##556BB7	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C73BA

Deuteranopia (green-blind)

#406BB5

Tritanopia (blue-blind)

#257B88

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #556bb7;
/* rgb */ color: rgb(85, 107, 183);
/* oklch */ color: oklch(54.6% 0.121 269.9);

Tailwind

colors: {
  custom: {
    50: '#8b95cd',
    500: '#556bb7',
    950: '#000000',
  },
}

SCSS

$custom: #556bb7;
$custom-light: #8b95cd;
$custom-dark: #000000;

JSON

{
  "hex": "#556bb7",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 183
  },
  "hsl": {
    "h": 226.531,
    "s": 40.496,
    "l": 52.549
  },
  "oklch": {
    "l": 0.54639,
    "c": 0.12142,
    "h": 269.9
  },
  "luminance": 0.15866
}

Semantic roles & 50–950 ramp

primary

#556BB7

secondary

#C9C09F

accent

#B557D0

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556BB7

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

Preview Lab → · Contrast checker → · Palette generator →