#40506B#40506B

#40506B is a dark, muted blue. Relative luminance 0.079; OKLCH L 42.9% C 0.049 H 260.7°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#40506B
RGB	rgb(64, 80, 107)
HSL	hsl(218, 25%, 34%)
HSV	hsv(218, 40%, 42%)
CMYK	cmyk(40.2%, 25.2%, 0%, 58%)
CIE-LAB	lab(33.75, 1.31, -17.58)
CIE-LCH	lch(33.75, 17.63, 274.26°)
OKLab	oklab(42.92% -0.008 -0.0488)
OKLCH	oklch(42.92% 0.049 260.7)
XYZ	xyz(7.6360, 7.8885, 15.0273)
Luminance	0.0789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40506B #6B5B40

analogous

#40656B #40506B #45406B

triadic

#40506B #6B4050 #506B40

tetradic

#40506B #6B4065 #6B5B40 #406B45

square

#40506B #6B4065 #6B5B40 #406B45

split-complementary

#40506B #6B4540 #656B40

monochromatic

#12171E #293345 #40506B #576D91 #778CAE

Accessibility & contrast

On white

8.15

#40506B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#40506B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40506B

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40506B	#FFFFFF	#000000	##FFFFFF
##40506B	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47526C

Deuteranopia (green-blind)

#424E6A

Tritanopia (blue-blind)

#325659

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #40506b;
/* rgb */ color: rgb(64, 80, 107);
/* oklch */ color: oklch(42.9% 0.049 260.7);

Tailwind

colors: {
  custom: {
    50: '#768195',
    500: '#40506b',
    950: '#000000',
  },
}

SCSS

$custom: #40506b;
$custom-light: #768195;
$custom-dark: #000000;

JSON

{
  "hex": "#40506b",
  "rgb": {
    "r": 64,
    "g": 80,
    "b": 107
  },
  "hsl": {
    "h": 217.674,
    "s": 25.146,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42918,
    "c": 0.04944,
    "h": 260.7
  },
  "luminance": 0.07889
}

Semantic roles & 50–950 ramp

primary

#40506B

secondary

#99896E

accent

#A066C2

background

#F7F7F9

surface

#EDEEF1

border

#C8C9CB

text

#090A0D

muted

#7B7C7E

Preview Lab

Preview with #40506B

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

Preview Lab → · Contrast checker → · Palette generator →