#403F53#403F53

#403F53 is a dark, muted blue. Relative luminance 0.053; OKLCH L 37.7% C 0.034 H 286.9°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#403F53
RGB	rgb(64, 63, 83)
HSL	hsl(243, 14%, 29%)
HSV	hsv(243, 24%, 33%)
CMYK	cmyk(22.9%, 24.1%, 0%, 67.5%)
CIE-LAB	lab(27.49, 5.39, -11.85)
CIE-LCH	lch(27.49, 13.02, 294.44°)
OKLab	oklab(37.69% 0.0099 -0.0325)
OKLCH	oklch(37.69% 0.034 286.9)
XYZ	xyz(5.4528, 5.2695, 8.9118)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F53 #52533F

analogous

#3F4853 #403F53 #4A3F53

triadic

#403F53 #53403F #3F5340

tetradic

#403F53 #533F48 #52533F #3F534A

square

#403F53 #533F48 #52533F #3F534A

split-complementary

#403F53 #534A3F #48533F

monochromatic

#0D0D11 #252530 #403F53 #5B5976 #777697

Accessibility & contrast

On white

10.22

#403F53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#403F53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F53

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F53	#FFFFFF	#000000	##FFFFFF
##403F53	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A4154

Deuteranopia (green-blind)

#3A4052

Tritanopia (blue-blind)

#3C4246

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #403f53;
/* rgb */ color: rgb(64, 63, 83);
/* oklch */ color: oklch(37.7% 0.034 286.9);

Tailwind

colors: {
  custom: {
    50: '#757483',
    500: '#403f53',
    950: '#000000',
  },
}

SCSS

$custom: #403f53;
$custom-light: #757483;
$custom-dark: #000000;

JSON

{
  "hex": "#403f53",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 83
  },
  "hsl": {
    "h": 243,
    "s": 13.699,
    "l": 28.627
  },
  "oklch": {
    "l": 0.37692,
    "c": 0.03395,
    "h": 286.9
  },
  "luminance": 0.0527
}

Semantic roles & 50–950 ramp

primary

#403F53

secondary

#81826B

accent

#B771B3

background

#F7F7F8

surface

#EDEDEF

border

#C8C8CA

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #403F53

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

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