#40404E#40404E

#40404E is a dark, muted blue. Relative luminance 0.053; OKLCH L 37.7% C 0.024 H 285.2°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#40404E
RGB	rgb(64, 64, 78)
HSL	hsl(240, 10%, 28%)
HSV	hsv(240, 18%, 31%)
CMYK	cmyk(17.9%, 17.9%, 0%, 69.4%)
CIE-LAB	lab(27.59, 3.40, -8.43)
CIE-LCH	lch(27.59, 9.09, 291.94°)
OKLab	oklab(37.7% 0.0062 -0.0229)
OKLCH	oklch(37.7% 0.024 285.2)
XYZ	xyz(5.3226, 5.3068, 7.9501)
Luminance	0.0531 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40404E #4E4E40

analogous

#40474E #40404E #47404E

triadic

#40404E #4E4040 #404E40

tetradic

#40404E #4E4047 #4E4E40 #404E47

square

#40404E #4E4047 #4E4E40 #404E47

split-complementary

#40404E #4E4740 #474E40

monochromatic

#0E0E11 #24242C #40404E #5C5C70 #787890

Accessibility & contrast

On white

10.19

#40404E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#40404E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40404E

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40404E	#FFFFFF	#000000	##FFFFFF
##40404E	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D424F

Deuteranopia (green-blind)

#3C414E

Tritanopia (blue-blind)

#3D4245

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #40404e;
/* rgb */ color: rgb(64, 64, 78);
/* oklch */ color: oklch(37.7% 0.024 285.2);

Tailwind

colors: {
  custom: {
    50: '#75747f',
    500: '#40404e',
    950: '#000000',
  },
}

SCSS

$custom: #40404e;
$custom-light: #75747f;
$custom-dark: #000000;

JSON

{
  "hex": "#40404e",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 78
  },
  "hsl": {
    "h": 240,
    "s": 9.859,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37704,
    "c": 0.02375,
    "h": 285.2
  },
  "luminance": 0.05307
}

Semantic roles & 50–950 ramp

primary

#40404E

secondary

#7D7D6D

accent

#B375B3

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #40404E

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

Preview Lab → · Contrast checker → · Palette generator →