#4F73CB#4F73CB

#4F73CB is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.2% C 0.142 H 265.4°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#4F73CB
RGB	rgb(79, 115, 203)
HSL	hsl(223, 54%, 55%)
HSV	hsv(223, 61%, 80%)
CMYK	cmyk(61.1%, 43.3%, 0%, 20.4%)
CIE-LAB	lab(49.78, 14.52, -49.59)
CIE-LCH	lch(49.78, 51.67, 286.31°)
OKLab	oklab(57.2% -0.0113 -0.1414)
OKLCH	oklch(57.2% 0.142 265.4)
XYZ	xyz(20.1310, 18.2338, 58.9469)
Luminance	0.1824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F73CB #CBA74F

analogous

#4FB1CB #4F73CB #694FCB

triadic

#4F73CB #CB4F73 #73CB4F

tetradic

#4F73CB #CB4FB1 #CBA74F #4FCB69

square

#4F73CB #CB4FB1 #CBA74F #4FCB69

split-complementary

#4F73CB #CB694F #B1CB4F

monochromatic

#243E7B #3255AA #4F73CB #7E99D9 #ADBEE7

Accessibility & contrast

On white

4.52

#4F73CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#4F73CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F73CB

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F73CB	#FFFFFF	#000000	##000000
##4F73CB	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7CCE

Deuteranopia (green-blind)

#3871C9

Tritanopia (blue-blind)

#008795

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4f73cb;
/* rgb */ color: rgb(79, 115, 203);
/* oklch */ color: oklch(57.2% 0.142 265.4);

Tailwind

colors: {
  custom: {
    50: '#8b9adb',
    500: '#4f73cb',
    950: '#000000',
  },
}

SCSS

$custom: #4f73cb;
$custom-light: #8b9adb;
$custom-dark: #000000;

JSON

{
  "hex": "#4f73cb",
  "rgb": {
    "r": 79,
    "g": 115,
    "b": 203
  },
  "hsl": {
    "h": 222.581,
    "s": 54.386,
    "l": 55.294
  },
  "oklch": {
    "l": 0.57204,
    "c": 0.14181,
    "h": 265.4
  },
  "luminance": 0.18236
}

Semantic roles & 50–950 ramp

primary

#4F73CB

secondary

#D5C6A1

accent

#B34ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #4F73CB

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

Preview Lab → · Contrast checker → · Palette generator →