#4B71BB#4B71BB

#4B71BB is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.6% C 0.123 H 262.5°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#4B71BB
RGB	rgb(75, 113, 187)
HSL	hsl(220, 45%, 51%)
HSV	hsv(220, 60%, 73%)
CMYK	cmyk(59.9%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(48.12, 9.52, -43.05)
CIE-LCH	lch(48.12, 44.09, 282.48°)
OKLab	oklab(55.58% -0.016 -0.1223)
OKLCH	oklch(55.58% 0.123 262.5)
XYZ	xyz(17.7733, 16.8924, 49.3280)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B71BB #BB954B

analogous

#4BA9BB #4B71BB #5D4BBB

triadic

#4B71BB #BB4B71 #71BB4B

tetradic

#4B71BB #BB4BA9 #BB954B #4BBB5D

square

#4B71BB #BB4BA9 #BB954B #4BBB5D

split-complementary

#4B71BB #BB5D4B #A9BB4B

monochromatic

#263C65 #375692 #4B71BB #7794CC #A4B7DD

Accessibility & contrast

On white

4.80

#4B71BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#4B71BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B71BB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B71BB	#FFFFFF	#000000	##FFFFFF
##4B71BB	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BE

Deuteranopia (green-blind)

#426DB9

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4b71bb;
/* rgb */ color: rgb(75, 113, 187);
/* oklch */ color: oklch(55.6% 0.123 262.5);

Tailwind

colors: {
  custom: {
    50: '#8799d0',
    500: '#4b71bb',
    950: '#000000',
  },
}

SCSS

$custom: #4b71bb;
$custom-light: #8799d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4b71bb",
  "rgb": {
    "r": 75,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 219.643,
    "s": 45.161,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55584,
    "c": 0.12331,
    "h": 262.5
  },
  "luminance": 0.16894
}

Semantic roles & 50–950 ramp

primary

#4B71BB

secondary

#CAB998

accent

#A953D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4B71BB

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

Preview Lab → · Contrast checker → · Palette generator →