#5571BB#5571BB

#5571BB is a mid, moderate blue. Relative luminance 0.173; OKLCH L 56.2% C 0.120 H 266.9°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#5571BB
RGB	rgb(85, 113, 187)
HSL	hsl(224, 43%, 53%)
HSV	hsv(224, 55%, 73%)
CMYK	cmyk(54.5%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(48.67, 11.63, -42.15)
CIE-LCH	lch(48.67, 43.72, 285.42°)
OKLab	oklab(56.15% -0.0064 -0.1194)
OKLCH	oklch(56.15% 0.12 266.9)
XYZ	xyz(18.6181, 17.3280, 49.3676)
Luminance	0.1733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5571BB #BB9F55

analogous

#55A4BB #5571BB #6C55BB

triadic

#5571BB #BB5571 #71BB55

tetradic

#5571BB #BB55A4 #BB9F55 #55BB6C

square

#5571BB #BB55A4 #BB9F55 #55BB6C

split-complementary

#5571BB #BB6C55 #A4BB55

monochromatic

#2B3C6B #3C5597 #5571BB #8196CC #ACBADE

Accessibility & contrast

On white

4.70

#5571BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#5571BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5571BB

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5571BB	#FFFFFF	#000000	##FFFFFF
##5571BB	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5379BE

Deuteranopia (green-blind)

#476FB9

Tritanopia (blue-blind)

#1D818D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #5571bb;
/* rgb */ color: rgb(85, 113, 187);
/* oklch */ color: oklch(56.2% 0.120 266.9);

Tailwind

colors: {
  custom: {
    50: '#8c99d0',
    500: '#5571bb',
    950: '#000000',
  },
}

SCSS

$custom: #5571bb;
$custom-light: #8c99d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5571bb",
  "rgb": {
    "r": 85,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 223.529,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.56152,
    "c": 0.11961,
    "h": 266.9
  },
  "luminance": 0.17329
}

Semantic roles & 50–950 ramp

primary

#5571BB

secondary

#CCC0A0

accent

#B055D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0D14

muted

#7D7E82

Preview Lab

Preview with #5571BB

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

Preview Lab → · Contrast checker → · Palette generator →