#4540BB#4540BB

#4540BB is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.187 H 277.8°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#4540BB
RGB	rgb(69, 64, 187)
HSL	hsl(242, 49%, 49%)
HSV	hsv(242, 66%, 73%)
CMYK	cmyk(63.1%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(35.04, 39.28, -64.16)
CIE-LCH	lch(35.04, 75.23, 301.48°)
OKLab	oklab(45.64% 0.0254 -0.1849)
OKLCH	oklch(45.64% 0.187 277.8)
XYZ	xyz(13.2544, 8.5188, 47.9499)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.70

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4540BB #B6BB40

analogous

#4079BB #4540BB #8340BB

triadic

#4540BB #BB4540 #40BB45

tetradic

#4540BB #BB4079 #B6BB40 #40BB83

square

#4540BB #BB4079 #B6BB40 #40BB83

split-complementary

#4540BB #BB8340 #79BB40

monochromatic

#232160 #34308D #4540BB #706CCD #9C99DC

Accessibility & contrast

On white

7.77

#4540BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#4540BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4540BB

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4540BB	#FFFFFF	#000000	##FFFFFF
##4540BB	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BF

Deuteranopia (green-blind)

#004DB9

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4540bb;
/* rgb */ color: rgb(69, 64, 187);
/* oklch */ color: oklch(45.6% 0.187 277.8);

Tailwind

colors: {
  custom: {
    50: '#8675d0',
    500: '#4540bb',
    950: '#000000',
  },
}

SCSS

$custom: #4540bb;
$custom-light: #8675d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4540bb",
  "rgb": {
    "r": 69,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 242.439,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45638,
    "c": 0.18667,
    "h": 277.8
  },
  "luminance": 0.0852
}

Semantic roles & 50–950 ramp

primary

#4540BB

secondary

#C6C88F

accent

#D94FD3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4540BB

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

Preview Lab → · Contrast checker → · Palette generator →