#664E4A#664E4A

#664E4A is a dark, muted red. Relative luminance 0.088; OKLCH L 44.8% C 0.033 H 29.3°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#664E4A
RGB	rgb(102, 78, 74)
HSL	hsl(9, 16%, 35%)
HSV	hsv(9, 27%, 40%)
CMYK	cmyk(0%, 23.5%, 27.5%, 60%)
CIE-LAB	lab(35.53, 9.42, 6.24)
CIE-LCH	lch(35.53, 11.30, 33.54°)
OKLab	oklab(44.78% 0.029 0.0163)
OKLCH	oklch(44.78% 0.033 29.3)
XYZ	xyz(9.4400, 8.7684, 7.6725)
Luminance	0.0877 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664E4A #4A6266

analogous

#664A54 #664E4A #665C4A

triadic

#664E4A #4A664E #4E4A66

tetradic

#664E4A #54664A #4A6266 #5C4A66

square

#664E4A #54664A #4A6266 #5C4A66

split-complementary

#664E4A #4A665C #4A5466

monochromatic

#1F1817 #433330 #664E4A #896964 #A68984

Accessibility & contrast

On white

7.63

#664E4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#664E4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #664E4A

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664E4A	#FFFFFF	#000000	##FFFFFF
##664E4A	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#53514A

Deuteranopia (green-blind)

#59554A

Tritanopia (blue-blind)

#6C4B4D

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #664e4a;
/* rgb */ color: rgb(102, 78, 74);
/* oklch */ color: oklch(44.8% 0.033 29.3);

Tailwind

colors: {
  custom: {
    50: '#927f7c',
    500: '#664e4a',
    950: '#000000',
  },
}

SCSS

$custom: #664e4a;
$custom-light: #927f7c;
$custom-dark: #000000;

JSON

{
  "hex": "#664e4a",
  "rgb": {
    "r": 102,
    "g": 78,
    "b": 74
  },
  "hsl": {
    "h": 8.571,
    "s": 15.909,
    "l": 34.51
  },
  "oklch": {
    "l": 0.44783,
    "c": 0.03328,
    "h": 29.3
  },
  "luminance": 0.08768
}

Semantic roles & 50–950 ramp

primary

#664E4A

secondary

#789093

accent

#AEB96F

background

#F9F7F7

surface

#F1EEEE

border

#CBC9C9

text

#0D0A09

muted

#7E7C7B

Preview Lab

Preview with #664E4A

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

Preview Lab → · Contrast checker → · Palette generator →