#404F66#404F66

#404F66 is a dark, muted blue. Relative luminance 0.076; OKLCH L 42.4% C 0.043 H 258.8°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#404F66
RGB	rgb(64, 79, 102)
HSL	hsl(216, 23%, 33%)
HSV	hsv(216, 37%, 40%)
CMYK	cmyk(37.3%, 22.5%, 0%, 60%)
CIE-LAB	lab(33.22, 0.44, -15.25)
CIE-LCH	lch(33.22, 15.25, 271.66°)
OKLab	oklab(42.43% -0.0083 -0.0421)
OKLCH	oklch(42.43% 0.043 258.8)
XYZ	xyz(7.3079, 7.6409, 13.6576)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404F66 #665740

analogous

#406266 #404F66 #444066

triadic

#404F66 #66404F #4F6640

tetradic

#404F66 #664062 #665740 #406644

square

#404F66 #664062 #665740 #406644

split-complementary

#404F66 #664440 #626640

monochromatic

#11151B #283240 #404F66 #586C8C #778BAA

Accessibility & contrast

On white

8.31

#404F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#404F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404F66

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404F66	#FFFFFF	#000000	##FFFFFF
##404F66	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#475067

Deuteranopia (green-blind)

#434D65

Tritanopia (blue-blind)

#345457

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #404f66;
/* rgb */ color: rgb(64, 79, 102);
/* oklch */ color: oklch(42.4% 0.043 258.8);

Tailwind

colors: {
  custom: {
    50: '#768091',
    500: '#404f66',
    950: '#000000',
  },
}

SCSS

$custom: #404f66;
$custom-light: #768091;
$custom-dark: #000000;

JSON

{
  "hex": "#404f66",
  "rgb": {
    "r": 64,
    "g": 79,
    "b": 102
  },
  "hsl": {
    "h": 216.316,
    "s": 22.892,
    "l": 32.549
  },
  "oklch": {
    "l": 0.42434,
    "c": 0.04296,
    "h": 258.8
  },
  "luminance": 0.07641
}

Semantic roles & 50–950 ramp

primary

#404F66

secondary

#95856D

accent

#9D68BF

background

#F7F7F8

surface

#EDEEF0

border

#C8C9CB

text

#080A0C

muted

#7B7C7D

Preview Lab

Preview with #404F66

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

Preview Lab → · Contrast checker → · Palette generator →