#664D4E#664D4E

#664D4E is a dark, muted red. Relative luminance 0.087; OKLCH L 44.7% C 0.034 H 15.8°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#664D4E
RGB	rgb(102, 77, 78)
HSL	hsl(358, 14%, 35%)
HSV	hsv(358, 25%, 40%)
CMYK	cmyk(0%, 24.5%, 23.5%, 60%)
CIE-LAB	lab(35.37, 10.70, 3.49)
CIE-LCH	lch(35.37, 11.26, 18.04°)
OKLab	oklab(44.69% 0.0326 0.0093)
OKLCH	oklch(44.69% 0.034 15.8)
XYZ	xyz(9.5086, 8.6830, 8.3814)
Luminance	0.0868 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664D4E #4D6665

analogous

#664D5A #664D4E #66584D

triadic

#664D4E #4E664D #4D4E66

tetradic

#664D4E #5A664D #4D6665 #584D66

square

#664D4E #5A664D #4D6665 #584D66

split-complementary

#664D4E #4D6658 #4D5A66

monochromatic

#201819 #433333 #664D4E #896769 #A58889

Accessibility & contrast

On white

7.67

#664D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#664D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #664D4E

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664D4E	#FFFFFF	#000000	##FFFFFF
##664D4E	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51504E

Deuteranopia (green-blind)

#57554E

Tritanopia (blue-blind)

#6B4B4D

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #664d4e;
/* rgb */ color: rgb(102, 77, 78);
/* oklch */ color: oklch(44.7% 0.034 15.8);

Tailwind

colors: {
  custom: {
    50: '#927f7f',
    500: '#664d4e',
    950: '#000000',
  },
}

SCSS

$custom: #664d4e;
$custom-light: #927f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#664d4e",
  "rgb": {
    "r": 102,
    "g": 77,
    "b": 78
  },
  "hsl": {
    "h": 357.6,
    "s": 13.966,
    "l": 35.098
  },
  "oklch": {
    "l": 0.44689,
    "c": 0.03391,
    "h": 15.8
  },
  "luminance": 0.08683
}

Semantic roles & 50–950 ramp

primary

#664D4E

secondary

#7C9392

accent

#B7B471

background

#F9F7F7

surface

#F1EEEE

border

#CBC9C9

text

#0D0A0A

muted

#7E7C7C

Preview Lab

Preview with #664D4E

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

Preview Lab → · Contrast checker → · Palette generator →