#4540B7#4540B7

#4540B7 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.3% C 0.181 H 278.2°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#4540B7
RGB	rgb(69, 64, 183)
HSL	hsl(243, 48%, 48%)
HSV	hsv(243, 65%, 72%)
CMYK	cmyk(62.3%, 65%, 0%, 28.2%)
CIE-LAB	lab(34.70, 37.96, -62.36)
CIE-LCH	lch(34.70, 73.00, 301.33°)
OKLab	oklab(45.29% 0.0258 -0.1796)
OKLCH	oklch(45.29% 0.181 278.2)
XYZ	xyz(12.8321, 8.3499, 45.7260)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.55

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4540B7 #B2B740

analogous

#4076B7 #4540B7 #8040B7

triadic

#4540B7 #B74540 #40B745

tetradic

#4540B7 #B74076 #B2B740 #40B780

square

#4540B7 #B74076 #B2B740 #40B780

split-complementary

#4540B7 #B78040 #76B740

monochromatic

#23205C #34308A #4540B7 #6E69CB #9A97DB

Accessibility & contrast

On white

7.86

#4540B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#4540B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4540B7

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4540B7	#FFFFFF	#000000	##FFFFFF
##4540B7	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BB

Deuteranopia (green-blind)

#004DB5

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4540b7;
/* rgb */ color: rgb(69, 64, 183);
/* oklch */ color: oklch(45.3% 0.181 278.2);

Tailwind

colors: {
  custom: {
    50: '#8575ce',
    500: '#4540b7',
    950: '#000000',
  },
}

SCSS

$custom: #4540b7;
$custom-light: #8575ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4540b7",
  "rgb": {
    "r": 69,
    "g": 64,
    "b": 183
  },
  "hsl": {
    "h": 242.521,
    "s": 48.178,
    "l": 48.431
  },
  "oklch": {
    "l": 0.45286,
    "c": 0.18149,
    "h": 278.2
  },
  "luminance": 0.08351
}

Semantic roles & 50–950 ramp

primary

#4540B7

secondary

#C4C68D

accent

#D850D2

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4540B7

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

Preview Lab → · Contrast checker → · Palette generator →