#4B73BB#4B73BB

#4B73BB is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.0% C 0.121 H 261.3°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#4B73BB
RGB	rgb(75, 115, 187)
HSL	hsl(219, 45%, 51%)
HSV	hsv(219, 60%, 73%)
CMYK	cmyk(59.9%, 38.5%, 0%, 26.7%)
CIE-LAB	lab(48.69, 8.29, -42.15)
CIE-LCH	lch(48.69, 42.96, 281.13°)
OKLab	oklab(56.02% -0.0182 -0.1196)
OKLCH	oklch(56.02% 0.121 261.3)
XYZ	xyz(17.9989, 17.3436, 49.4032)
Luminance	0.1734 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B73BB #BB934B

analogous

#4BABBB #4B73BB #5B4BBB

triadic

#4B73BB #BB4B73 #73BB4B

tetradic

#4B73BB #BB4BAB #BB934B #4BBB5B

square

#4B73BB #BB4BAB #BB934B #4BBB5B

split-complementary

#4B73BB #BB5B4B #ABBB4B

monochromatic

#263D65 #375792 #4B73BB #7796CC #A4B8DD

Accessibility & contrast

On white

4.70

#4B73BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#4B73BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B73BB

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B73BB	#FFFFFF	#000000	##FFFFFF
##4B73BB	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)

#5479BE

Deuteranopia (green-blind)

#456FB9

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4b73bb;
/* rgb */ color: rgb(75, 115, 187);
/* oklch */ color: oklch(56.0% 0.121 261.3);

Tailwind

colors: {
  custom: {
    50: '#869ad0',
    500: '#4b73bb',
    950: '#000000',
  },
}

SCSS

$custom: #4b73bb;
$custom-light: #869ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4b73bb",
  "rgb": {
    "r": 75,
    "g": 115,
    "b": 187
  },
  "hsl": {
    "h": 218.571,
    "s": 45.161,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56022,
    "c": 0.12099,
    "h": 261.3
  },
  "luminance": 0.17345
}

Semantic roles & 50–950 ramp

primary

#4B73BB

secondary

#CAB898

accent

#A653D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4B73BB

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

Preview Lab → · Contrast checker → · Palette generator →