#40396F#40396F

#40396F is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.9% C 0.090 H 287.3°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#40396F
RGB	rgb(64, 57, 111)
HSL	hsl(248, 32%, 33%)
HSV	hsv(248, 49%, 44%)
CMYK	cmyk(42.3%, 48.6%, 0%, 56.5%)
CIE-LAB	lab(27.20, 17.71, -30.38)
CIE-LCH	lch(27.20, 35.17, 300.24°)
OKLab	oklab(37.94% 0.0267 -0.0859)
OKLCH	oklch(37.94% 0.09 287.3)
XYZ	xyz(6.4459, 5.1637, 15.6929)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40396F #686F39

analogous

#394D6F #40396F #5B396F

triadic

#40396F #6F4039 #396F40

tetradic

#40396F #6F394D #686F39 #396F5B

square

#40396F #6F394D #686F39 #396F5B

split-complementary

#40396F #6F5B39 #4D6F39

monochromatic

#110F1E #292447 #40396F #574E97 #776EB4

Accessibility & contrast

On white

10.33

#40396F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#40396F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40396F

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40396F	#FFFFFF	#000000	##FFFFFF
##40396F	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254271

Deuteranopia (green-blind)

#243F6E

Tritanopia (blue-blind)

#33444E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #40396f;
/* rgb */ color: rgb(64, 57, 111);
/* oklch */ color: oklch(37.9% 0.090 287.3);

Tailwind

colors: {
  custom: {
    50: '#776f98',
    500: '#40396f',
    950: '#000000',
  },
}

SCSS

$custom: #40396f;
$custom-light: #776f98;
$custom-dark: #000000;

JSON

{
  "hex": "#40396f",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 111
  },
  "hsl": {
    "h": 247.778,
    "s": 32.143,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37943,
    "c": 0.08994,
    "h": 287.3
  },
  "luminance": 0.05164
}

Semantic roles & 50–950 ramp

primary

#40396F

secondary

#979E66

accent

#C85FBB

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#09070E

muted

#7B7A7E

Preview Lab

Preview with #40396F

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

Preview Lab → · Contrast checker → · Palette generator →