#40409D#40409D

#40409D is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.7% C 0.147 H 278.2°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#40409D
RGB	rgb(64, 64, 157)
HSL	hsl(240, 42%, 43%)
HSV	hsv(240, 59%, 62%)
CMYK	cmyk(59.2%, 59.2%, 0%, 38.4%)
CIE-LAB	lab(32.24, 28.38, -50.84)
CIE-LCH	lch(32.24, 58.22, 299.17°)
OKLab	oklab(42.73% 0.0209 -0.1459)
OKLCH	oklch(42.73% 0.147 278.2)
XYZ	xyz(10.0316, 7.1904, 32.7510)
Luminance	0.0719 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40409D #9D9D40

analogous

#406E9D #40409D #6E409D

triadic

#40409D #9D4040 #409D40

tetradic

#40409D #9D406E #9D9D40 #409D6E

square

#40409D #9D406E #9D9D40 #409D6E

split-complementary

#40409D #9D6E40 #6E9D40

monochromatic

#1D1D46 #2E2E72 #40409D #5D5DBD #8989CF

Accessibility & contrast

On white

8.61

#40409D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#40409D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40409D

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40409D	#FFFFFF	#000000	##FFFFFF
##40409D	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A0

Deuteranopia (green-blind)

#00489B

Tritanopia (blue-blind)

#015668

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #40409d;
/* rgb */ color: rgb(64, 64, 157);
/* oklch */ color: oklch(42.7% 0.147 278.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#40409d",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 157
  },
  "hsl": {
    "h": 240,
    "s": 42.081,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42729,
    "c": 0.14744,
    "h": 278.2
  },
  "luminance": 0.07191
}

Semantic roles & 50–950 ramp

primary

#40409D

secondary

#B9B97F

accent

#D256D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40409D

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

Preview Lab → · Contrast checker → · Palette generator →