#664C4E#664C4E

#664C4E is a dark, muted red. Relative luminance 0.085; OKLCH L 44.5% C 0.035 H 13.4°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#664C4E
RGB	rgb(102, 76, 78)
HSL	hsl(355, 15%, 35%)
HSV	hsv(355, 25%, 40%)
CMYK	cmyk(0%, 25.5%, 23.5%, 60%)
CIE-LAB	lab(35.09, 11.32, 3.09)
CIE-LCH	lch(35.09, 11.74, 15.26°)
OKLab	oklab(44.48% 0.0344 0.0082)
OKLCH	oklch(44.48% 0.035 13.4)
XYZ	xyz(9.4392, 8.5442, 8.3582)
Luminance	0.0854 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664C4E #4C6664

analogous

#664C5B #664C4E #66574C

triadic

#664C4E #4E664C #4C4E66

tetradic

#664C4E #5B664C #4C6664 #574C66

square

#664C4E #5B664C #4C6664 #574C66

split-complementary

#664C4E #4C6657 #4C5B66

monochromatic

#201818 #433233 #664C4E #896669 #A68789

Accessibility & contrast

On white

7.75

#664C4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#664C4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #664C4E

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664C4E	#FFFFFF	#000000	##FFFFFF
##664C4E	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50504E

Deuteranopia (green-blind)

#56544E

Tritanopia (blue-blind)

#6B4A4D

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #664c4e;
/* rgb */ color: rgb(102, 76, 78);
/* oklch */ color: oklch(44.5% 0.035 13.4);

Tailwind

colors: {
  custom: {
    50: '#927e7f',
    500: '#664c4e',
    950: '#000000',
  },
}

SCSS

$custom: #664c4e;
$custom-light: #927e7f;
$custom-dark: #000000;

JSON

{
  "hex": "#664c4e",
  "rgb": {
    "r": 102,
    "g": 76,
    "b": 78
  },
  "hsl": {
    "h": 355.385,
    "s": 14.607,
    "l": 34.902
  },
  "oklch": {
    "l": 0.44476,
    "c": 0.0354,
    "h": 13.4
  },
  "luminance": 0.08544
}

Semantic roles & 50–950 ramp

primary

#664C4E

secondary

#7B9391

accent

#B7B270

background

#F9F7F7

surface

#F1EEEE

border

#CBC9C9

text

#0D0A0A

muted

#7E7C7C

Preview Lab

Preview with #664C4E

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

Preview Lab → · Contrast checker → · Palette generator →