#40409E#40409E

#40409E is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.149 H 278.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#40409E
RGB	rgb(64, 64, 158)
HSL	hsl(240, 42%, 44%)
HSV	hsv(240, 59%, 62%)
CMYK	cmyk(59.5%, 59.5%, 0%, 38%)
CIE-LAB	lab(32.31, 28.72, -51.32)
CIE-LCH	lch(32.31, 58.81, 299.23°)
OKLab	oklab(42.81% 0.0209 -0.1474)
OKLCH	oklch(42.81% 0.149 278.1)
XYZ	xyz(10.1173, 7.2247, 33.2025)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40409E #9E9E40

analogous

#406F9E #40409E #6F409E

triadic

#40409E #9E4040 #409E40

tetradic

#40409E #9E406F #9E9E40 #409E6F

square

#40409E #9E406F #9E9E40 #409E6F

split-complementary

#40409E #9E6F40 #6F9E40

monochromatic

#1D1D47 #2E2E72 #40409E #5E5EBE #8989CF

Accessibility & contrast

On white

8.59

#40409E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#40409E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40409E

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40409E	#FFFFFF	#000000	##FFFFFF
##40409E	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A1

Deuteranopia (green-blind)

#00489C

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #40409e;
/* rgb */ color: rgb(64, 64, 158);
/* oklch */ color: oklch(42.8% 0.149 278.1);

Tailwind

colors: {
  custom: {
    50: '#7e75bb',
    500: '#40409e',
    950: '#000000',
  },
}

SCSS

$custom: #40409e;
$custom-light: #7e75bb;
$custom-dark: #000000;

JSON

{
  "hex": "#40409e",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 158
  },
  "hsl": {
    "h": 240,
    "s": 42.342,
    "l": 43.529
  },
  "oklch": {
    "l": 0.4281,
    "c": 0.14884,
    "h": 278.1
  },
  "luminance": 0.07225
}

Semantic roles & 50–950 ramp

primary

#40409E

secondary

#BABA80

accent

#D256D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40409E

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

Preview Lab → · Contrast checker → · Palette generator →