#4B71DB#4B71DB

#4B71DB is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.6% C 0.168 H 266.4°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#4B71DB
RGB	rgb(75, 113, 219)
HSL	hsl(224, 67%, 58%)
HSV	hsv(224, 66%, 86%)
CMYK	cmyk(65.8%, 48.4%, 0%, 14.1%)
CIE-LAB	lab(50.00, 20.59, -58.34)
CIE-LCH	lch(50.00, 61.87, 289.44°)
OKLab	oklab(57.63% -0.0106 -0.1672)
OKLCH	oklch(57.63% 0.168 266.4)
XYZ	xyz(21.5885, 18.4185, 69.4215)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B71DB #DBB54B

analogous

#4BB9DB #4B71DB #6D4BDB

triadic

#4B71DB #DB4B71 #71DB4B

tetradic

#4B71DB #DB4BB9 #DBB54B #4BDB6D

square

#4B71DB #DB4BB9 #DBB54B #4BDB6D

split-complementary

#4B71DB #DB6D4B #B9DB4B

monochromatic

#1D3B8F #2750C2 #4B71DB #7E99E5 #B1C1EF

Accessibility & contrast

On white

4.48

#4B71DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#4B71DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B71DB

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B71DB	#FFFFFF	#000000	##000000
##4B71DB	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#387EDF

Deuteranopia (green-blind)

#1371D9

Tritanopia (blue-blind)

#008A9B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4b71db;
/* rgb */ color: rgb(75, 113, 219);
/* oklch */ color: oklch(57.6% 0.168 266.4);

Tailwind

colors: {
  custom: {
    50: '#8c99e7',
    500: '#4b71db',
    950: '#000000',
  },
}

SCSS

$custom: #4b71db;
$custom-light: #8c99e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4b71db",
  "rgb": {
    "r": 75,
    "g": 113,
    "b": 219
  },
  "hsl": {
    "h": 224.167,
    "s": 66.667,
    "l": 57.647
  },
  "oklch": {
    "l": 0.5763,
    "c": 0.16752,
    "h": 266.4
  },
  "luminance": 0.18421
}

Semantic roles & 50–950 ramp

primary

#4B71DB

secondary

#DECFA4

accent

#BC3EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4B71DB

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

Preview Lab → · Contrast checker → · Palette generator →