#4F73BB#4F73BB

#4F73BB is a mid, moderate blue. Relative luminance 0.175; OKLCH L 56.2% C 0.119 H 263.0°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4F73BB
RGB	rgb(79, 115, 187)
HSL	hsl(220, 44%, 52%)
HSV	hsv(220, 58%, 73%)
CMYK	cmyk(57.8%, 38.5%, 0%, 26.7%)
CIE-LAB	lab(48.90, 9.11, -41.81)
CIE-LCH	lch(48.90, 42.79, 282.29°)
OKLab	oklab(56.24% -0.0145 -0.1185)
OKLCH	oklch(56.24% 0.119 263)
XYZ	xyz(18.3217, 17.5101, 49.4184)
Luminance	0.1751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F73BB #BB974F

analogous

#4FA9BB #4F73BB #614FBB

triadic

#4F73BB #BB4F73 #73BB4F

tetradic

#4F73BB #BB4FA9 #BB974F #4FBB61

square

#4F73BB #BB4FA9 #BB974F #4FBB61

split-complementary

#4F73BB #BB614F #A9BB4F

monochromatic

#283D68 #395794 #4F73BB #7B96CC #A7B9DD

Accessibility & contrast

On white

4.66

#4F73BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#4F73BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4F73BB

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F73BB	#FFFFFF	#000000	##FFFFFF
##4F73BB	1.00	4.66	4.50	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#557ABE

Deuteranopia (green-blind)

#4770B9

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4f73bb;
/* rgb */ color: rgb(79, 115, 187);
/* oklch */ color: oklch(56.2% 0.119 263.0);

Tailwind

colors: {
  custom: {
    50: '#899ad0',
    500: '#4f73bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f73bb;
$custom-light: #899ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f73bb",
  "rgb": {
    "r": 79,
    "g": 115,
    "b": 187
  },
  "hsl": {
    "h": 220,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.56237,
    "c": 0.11944,
    "h": 263
  },
  "luminance": 0.17512
}

Semantic roles & 50–950 ramp

primary

#4F73BB

secondary

#CABB9B

accent

#A954D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4F73BB

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

Preview Lab → · Contrast checker → · Palette generator →