#5578BB#5578BB

#5578BB is a mid, moderate blue. Relative luminance 0.190; OKLCH L 57.7% C 0.111 H 262.5°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#5578BB
RGB	rgb(85, 120, 187)
HSL	hsl(219, 43%, 53%)
HSV	hsv(219, 55%, 73%)
CMYK	cmyk(54.5%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(50.63, 7.34, -39.05)
CIE-LCH	lch(50.63, 39.73, 280.65°)
OKLab	oklab(57.67% -0.0146 -0.1103)
OKLCH	oklch(57.67% 0.111 262.5)
XYZ	xyz(19.4294, 18.9506, 49.6381)
Luminance	0.1895 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5578BB #BB9855

analogous

#55ABBB #5578BB #6555BB

triadic

#5578BB #BB5578 #78BB55

tetradic

#5578BB #BB55AB #BB9855 #55BB65

square

#5578BB #BB55AB #BB9855 #55BB65

split-complementary

#5578BB #BB6555 #ABBB55

monochromatic

#2B416B #3C5B97 #5578BB #819BCC #ACBDDE

Accessibility & contrast

On white

4.38

#5578BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#5578BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5578BB

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5578BB	#FFFFFF	#000000	##000000
##5578BB	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7EBE

Deuteranopia (green-blind)

#5174BA

Tritanopia (blue-blind)

#1B8791

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5578bb;
/* rgb */ color: rgb(85, 120, 187);
/* oklch */ color: oklch(57.7% 0.111 262.5);

Tailwind

colors: {
  custom: {
    50: '#8c9ed0',
    500: '#5578bb',
    950: '#000000',
  },
}

SCSS

$custom: #5578bb;
$custom-light: #8c9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#5578bb",
  "rgb": {
    "r": 85,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 219.412,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.57668,
    "c": 0.1113,
    "h": 262.5
  },
  "luminance": 0.18952
}

Semantic roles & 50–950 ramp

primary

#5578BB

secondary

#CCBDA0

accent

#A855D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E14

muted

#7D7E82

Preview Lab

Preview with #5578BB

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

Preview Lab → · Contrast checker → · Palette generator →