#4F71BB#4F71BB

#4F71BB is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.8% C 0.122 H 264.2°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#4F71BB
RGB	rgb(79, 113, 187)
HSL	hsl(221, 44%, 52%)
HSV	hsv(221, 58%, 73%)
CMYK	cmyk(57.8%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(48.33, 10.34, -42.70)
CIE-LCH	lch(48.33, 43.93, 283.61°)
OKLab	oklab(55.8% -0.0123 -0.1212)
OKLCH	oklch(55.8% 0.122 264.2)
XYZ	xyz(18.0962, 17.0589, 49.3432)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F71BB #BB994F

analogous

#4FA7BB #4F71BB #634FBB

triadic

#4F71BB #BB4F71 #71BB4F

tetradic

#4F71BB #BB4FA7 #BB994F #4FBB63

square

#4F71BB #BB4FA7 #BB994F #4FBB63

split-complementary

#4F71BB #BB634F #A7BB4F

monochromatic

#283C68 #395694 #4F71BB #7B95CC #A7B8DD

Accessibility & contrast

On white

4.76

#4F71BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#4F71BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F71BB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F71BB	#FFFFFF	#000000	##FFFFFF
##4F71BB	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5278BE

Deuteranopia (green-blind)

#446EB9

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4f71bb;
/* rgb */ color: rgb(79, 113, 187);
/* oklch */ color: oklch(55.8% 0.122 264.2);

Tailwind

colors: {
  custom: {
    50: '#8999d0',
    500: '#4f71bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f71bb;
$custom-light: #8999d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f71bb",
  "rgb": {
    "r": 79,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 221.111,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.55802,
    "c": 0.1218,
    "h": 264.2
  },
  "luminance": 0.1706
}

Semantic roles & 50–950 ramp

primary

#4F71BB

secondary

#CABC9B

accent

#AC54D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4F71BB

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

Preview Lab → · Contrast checker → · Palette generator →