#664E4E#664E4E

#664E4E is a dark, muted red. Relative luminance 0.088; OKLCH L 44.9% C 0.032 H 18.4°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).

Color values

HEX	#664E4E
RGB	rgb(102, 78, 78)
HSL	hsl(0, 13%, 35%)
HSV	hsv(0, 24%, 40%)
CMYK	cmyk(0%, 23.5%, 23.5%, 60%)
CIE-LAB	lab(35.64, 10.08, 3.88)
CIE-LCH	lch(35.64, 10.81, 21.06°)
OKLab	oklab(44.9% 0.0308 0.0103)
OKLCH	oklch(44.9% 0.032 18.4)
XYZ	xyz(9.5791, 8.8240, 8.4049)
Luminance	0.0882 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664E4E #4E6666

analogous

#664E5A #664E4E #665A4E

triadic

#664E4E #4E664E #4E4E66

tetradic

#664E4E #5A664E #4E6666 #5A4E66

square

#664E4E #5A664E #4E6666 #5A4E66

split-complementary

#664E4E #4E665A #4E5A66

monochromatic

#211919 #433333 #664E4E #896969 #A58989

Accessibility & contrast

On white

7.60

#664E4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#664E4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #664E4E

7.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664E4E	#FFFFFF	#000000	##FFFFFF
##664E4E	1.00	7.60	2.76	7.60
#FFFFFF	7.60	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#52514E

Deuteranopia (green-blind)

#58564E

Tritanopia (blue-blind)

#6B4C4E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #664e4e;
/* rgb */ color: rgb(102, 78, 78);
/* oklch */ color: oklch(44.9% 0.032 18.4);

Tailwind

colors: {
  custom: {
    50: '#927f7f',
    500: '#664e4e',
    950: '#000000',
  },
}

SCSS

$custom: #664e4e;
$custom-light: #927f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#664e4e",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 78
  },
  "hsl": {
    "h": 0,
    "s": 13.333,
    "l": 35.294
  },
  "oklch": {
    "l": 0.44904,
    "c": 0.03248,
    "h": 18.4
  },
  "luminance": 0.08824
}

Semantic roles & 50–950 ramp

primary

#664E4E

secondary

#7D9393

accent

#B6B672

background

#F9F7F7

surface

#F1EEEE

border

#CBC9C9

text

#0D0A0A

muted

#7E7C7C

Preview Lab

Preview with #664E4E

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

Preview Lab → · Contrast checker → · Palette generator →