#40409C#40409C

#40409C is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.6% C 0.146 H 278.2°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#40409C
RGB	rgb(64, 64, 156)
HSL	hsl(240, 42%, 43%)
HSV	hsv(240, 59%, 61%)
CMYK	cmyk(59%, 59%, 0%, 38.8%)
CIE-LAB	lab(32.16, 28.03, -50.36)
CIE-LCH	lch(32.16, 57.63, 299.11°)
OKLab	oklab(42.65% 0.0209 -0.1445)
OKLCH	oklch(42.65% 0.146 278.2)
XYZ	xyz(9.9466, 7.1564, 32.3032)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40409C #9C9C40

analogous

#406E9C #40409C #6E409C

triadic

#40409C #9C4040 #409C40

tetradic

#40409C #9C406E #9C9C40 #409C6E

square

#40409C #9C406E #9C9C40 #409C6E

split-complementary

#40409C #9C6E40 #6E9C40

monochromatic

#1C1C45 #2E2E71 #40409C #5D5DBC #8888CE

Accessibility & contrast

On white

8.64

#40409C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#40409C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40409C

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40409C	#FFFFFF	#000000	##FFFFFF
##40409C	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9F

Deuteranopia (green-blind)

#00489A

Tritanopia (blue-blind)

#035667

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #40409c;
/* rgb */ color: rgb(64, 64, 156);
/* oklch */ color: oklch(42.6% 0.146 278.2);

Tailwind

colors: {
  custom: {
    50: '#7e75ba',
    500: '#40409c',
    950: '#000000',
  },
}

SCSS

$custom: #40409c;
$custom-light: #7e75ba;
$custom-dark: #000000;

JSON

{
  "hex": "#40409c",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 156
  },
  "hsl": {
    "h": 240,
    "s": 41.818,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42648,
    "c": 0.14603,
    "h": 278.2
  },
  "luminance": 0.07157
}

Semantic roles & 50–950 ramp

primary

#40409C

secondary

#B9B97F

accent

#D256D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40409C

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

Preview Lab → · Contrast checker → · Palette generator →