#4040BE#4040BE

#4040BE is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.192 H 275.7°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#4040BE
RGB	rgb(64, 64, 190)
HSL	hsl(240, 50%, 50%)
HSV	hsv(240, 66%, 75%)
CMYK	cmyk(66.3%, 66.3%, 0%, 25.5%)
CIE-LAB	lab(34.95, 39.57, -66.09)
CIE-LCH	lch(34.95, 77.03, 300.91°)
OKLab	oklab(45.56% 0.0189 -0.1907)
OKLCH	oklch(45.56% 0.192 275.7)
XYZ	xyz(13.2390, 8.4733, 49.6431)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4040BE #BEBE40

analogous

#407FBE #4040BE #7F40BE

triadic

#4040BE #BE4040 #40BE40

tetradic

#4040BE #BE407F #BEBE40 #40BE7F

square

#4040BE #BE407F #BEBE40 #40BE7F

split-complementary

#4040BE #BE7F40 #7FBE40

monochromatic

#212162 #313190 #4040BE #6D6DCE #9B9BDD

Accessibility & contrast

On white

7.79

#4040BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#4040BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040BE

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040BE	#FFFFFF	#000000	##FFFFFF
##4040BE	1.00	7.79	2.69	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C2

Deuteranopia (green-blind)

#004DBC

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4040be;
/* rgb */ color: rgb(64, 64, 190);
/* oklch */ color: oklch(45.6% 0.192 275.7);

Tailwind

colors: {
  custom: {
    50: '#8475d3',
    500: '#4040be',
    950: '#000000',
  },
}

SCSS

$custom: #4040be;
$custom-light: #8475d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4040be",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 190
  },
  "hsl": {
    "h": 240,
    "s": 49.606,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45562,
    "c": 0.19166,
    "h": 275.7
  },
  "luminance": 0.08474
}

Semantic roles & 50–950 ramp

primary

#4040BE

secondary

#C9C990

accent

#D94FD9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4040BE

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

Preview Lab → · Contrast checker → · Palette generator →