#4F71BC#4F71BC

#4F71BC is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.123 H 264.4°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#4F71BC
RGB	rgb(79, 113, 188)
HSL	hsl(221, 45%, 52%)
HSV	hsv(221, 58%, 74%)
CMYK	cmyk(58%, 39.9%, 0%, 26.3%)
CIE-LAB	lab(48.39, 10.68, -43.19)
CIE-LCH	lch(48.39, 44.49, 283.88°)
OKLab	oklab(55.86% -0.0121 -0.1226)
OKLCH	oklch(55.86% 0.123 264.4)
XYZ	xyz(18.2036, 17.1019, 49.9089)
Luminance	0.1710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F71BC #BC9A4F

analogous

#4FA8BC #4F71BC #634FBC

triadic

#4F71BC #BC4F71 #71BC4F

tetradic

#4F71BC #BC4FA8 #BC9A4F #4FBC63

square

#4F71BC #BC4FA8 #BC9A4F #4FBC63

split-complementary

#4F71BC #BC634F #A8BC4F

monochromatic

#283C69 #395695 #4F71BC #7B95CD #A8B9DE

Accessibility & contrast

On white

4.75

#4F71BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#4F71BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F71BC

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F71BC	#FFFFFF	#000000	##FFFFFF
##4F71BC	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BF

Deuteranopia (green-blind)

#436EBA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4f71bc;
/* rgb */ color: rgb(79, 113, 188);
/* oklch */ color: oklch(55.9% 0.123 264.4);

Tailwind

colors: {
  custom: {
    50: '#8999d0',
    500: '#4f71bc',
    950: '#000000',
  },
}

SCSS

$custom: #4f71bc;
$custom-light: #8999d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f71bc",
  "rgb": {
    "r": 79,
    "g": 113,
    "b": 188
  },
  "hsl": {
    "h": 221.284,
    "s": 44.856,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55862,
    "c": 0.12321,
    "h": 264.4
  },
  "luminance": 0.17103
}

Semantic roles & 50–950 ramp

primary

#4F71BC

secondary

#CBBC9C

accent

#AC53D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4F71BC

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

Preview Lab → · Contrast checker → · Palette generator →