#403F4F#403F4F

#403F4F is a dark, muted blue. Relative luminance 0.052; OKLCH L 37.5% C 0.027 H 287.9°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#403F4F
RGB	rgb(64, 63, 79)
HSL	hsl(244, 11%, 28%)
HSV	hsv(244, 20%, 31%)
CMYK	cmyk(19%, 20.3%, 0%, 69%)
CIE-LAB	lab(27.32, 4.32, -9.49)
CIE-LCH	lch(27.32, 10.43, 294.45°)
OKLab	oklab(37.51% 0.0083 -0.0259)
OKLCH	oklch(37.51% 0.027 287.9)
XYZ	xyz(5.3028, 5.2095, 8.1218)
Luminance	0.0521 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F4F #4E4F3F

analogous

#3F464F #403F4F #483F4F

triadic

#403F4F #4F403F #3F4F40

tetradic

#403F4F #4F3F46 #4E4F3F #3F4F48

square

#403F4F #4F3F46 #4E4F3F #3F4F48

split-complementary

#403F4F #4F483F #464F3F

monochromatic

#0E0E11 #24242D #403F4F #5C5A71 #787692

Accessibility & contrast

On white

10.28

#403F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#403F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F4F

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F4F	#FFFFFF	#000000	##FFFFFF
##403F4F	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B4150

Deuteranopia (green-blind)

#3B404F

Tritanopia (blue-blind)

#3D4244

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #403f4f;
/* rgb */ color: rgb(64, 63, 79);
/* oklch */ color: oklch(37.5% 0.027 287.9);

Tailwind

colors: {
  custom: {
    50: '#757480',
    500: '#403f4f',
    950: '#000000',
  },
}

SCSS

$custom: #403f4f;
$custom-light: #757480;
$custom-dark: #000000;

JSON

{
  "hex": "#403f4f",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 79
  },
  "hsl": {
    "h": 243.75,
    "s": 11.268,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37509,
    "c": 0.02717,
    "h": 287.9
  },
  "luminance": 0.0521
}

Semantic roles & 50–950 ramp

primary

#403F4F

secondary

#7D7E6C

accent

#B474B0

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #403F4F

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

Preview Lab → · Contrast checker → · Palette generator →