#403D55#403D55

#403D55 is a dark, muted blue. Relative luminance 0.051; OKLCH L 37.3% C 0.041 H 290.0°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#403D55
RGB	rgb(64, 61, 85)
HSL	hsl(248, 16%, 29%)
HSV	hsv(248, 28%, 33%)
CMYK	cmyk(24.7%, 28.2%, 0%, 66.7%)
CIE-LAB	lab(26.97, 7.26, -13.95)
CIE-LCH	lch(26.97, 15.73, 297.49°)
OKLab	oklab(37.32% 0.014 -0.0384)
OKLCH	oklch(37.32% 0.041 290)
XYZ	xyz(5.4224, 5.0833, 9.2881)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D55 #52553D

analogous

#3D4655 #403D55 #4C3D55

triadic

#403D55 #55403D #3D5540

tetradic

#403D55 #553D46 #52553D #3D554C

square

#403D55 #553D46 #52553D #3D554C

split-complementary

#403D55 #554C3D #46553D

monochromatic

#0D0D12 #252331 #403D55 #5B5779 #77729A

Accessibility & contrast

On white

10.41

#403D55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#403D55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D55

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D55	#FFFFFF	#000000	##FFFFFF
##403D55	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#374056

Deuteranopia (green-blind)

#373F54

Tritanopia (blue-blind)

#3C4145

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #403d55;
/* rgb */ color: rgb(64, 61, 85);
/* oklch */ color: oklch(37.3% 0.041 290.0);

Tailwind

colors: {
  custom: {
    50: '#757285',
    500: '#403d55',
    950: '#000000',
  },
}

SCSS

$custom: #403d55;
$custom-light: #757285;
$custom-dark: #000000;

JSON

{
  "hex": "#403d55",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 85
  },
  "hsl": {
    "h": 247.5,
    "s": 16.438,
    "l": 28.627
  },
  "oklch": {
    "l": 0.37319,
    "c": 0.04086,
    "h": 290
  },
  "luminance": 0.05083
}

Semantic roles & 50–950 ramp

primary

#403D55

secondary

#818569

accent

#B96FB0

background

#F7F6F8

surface

#EDECEF

border

#C8C7CA

text

#08080B

muted

#7B7B7C

Preview Lab

Preview with #403D55

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

Preview Lab → · Contrast checker → · Palette generator →