#645554#645554

#645554 is a mid, near-neutral red. Relative luminance 0.098; OKLCH L 46.4% C 0.020 H 22.4°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#645554
RGB	rgb(100, 85, 84)
HSL	hsl(4, 9%, 36%)
HSV	hsv(4, 16%, 39%)
CMYK	cmyk(0%, 15%, 16%, 60.8%)
CIE-LAB	lab(37.57, 5.97, 2.87)
CIE-LCH	lch(37.57, 6.62, 25.63°)
OKLab	oklab(46.4% 0.0184 0.0076)
OKLCH	oklch(46.4% 0.02 22.4)
XYZ	xyz(10.1042, 9.8467, 9.7541)
Luminance	0.0985 (WCAG relative)
Temperature	neutral
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645554 #546364

analogous

#64545B #645554 #645D54

triadic

#645554 #546455 #555464

tetradic

#645554 #5B6454 #546364 #5D5464

square

#645554 #5B6454 #546364 #5D5464

split-complementary

#645554 #54645D #545B64

monochromatic

#211C1C #433938 #645554 #857170 #A29190

Accessibility & contrast

On white

7.07

#645554 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#645554 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #645554

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645554	#FFFFFF	#000000	##FFFFFF
##645554	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585754

Deuteranopia (green-blind)

#5B5954

Tritanopia (blue-blind)

#685455

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #645554;
/* rgb */ color: rgb(100, 85, 84);
/* oklch */ color: oklch(46.4% 0.020 22.4);

Tailwind

colors: {
  custom: {
    50: '#908484',
    500: '#645554',
    950: '#000000',
  },
}

SCSS

$custom: #645554;
$custom-light: #908484;
$custom-dark: #000000;

JSON

{
  "hex": "#645554",
  "rgb": {
    "r": 100,
    "g": 85,
    "b": 84
  },
  "hsl": {
    "h": 3.75,
    "s": 8.696,
    "l": 36.078
  },
  "oklch": {
    "l": 0.46404,
    "c": 0.01994,
    "h": 22.4
  },
  "luminance": 0.09846
}

Semantic roles & 50–950 ramp

primary

#645554

secondary

#839091

accent

#AEB276

background

#F8F8F8

surface

#F0EFEF

border

#CBCACA

text

#0C0B0A

muted

#7D7C7C

Preview Lab

Preview with #645554

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

Preview Lab → · Contrast checker → · Palette generator →