#644C50#644C50

#644C50 is a dark, muted red. Relative luminance 0.085; OKLCH L 44.3% C 0.033 H 7.3°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#644C50
RGB	rgb(100, 76, 80)
HSL	hsl(350, 14%, 35%)
HSV	hsv(350, 24%, 39%)
CMYK	cmyk(0%, 24%, 20%, 60.8%)
CIE-LAB	lab(34.92, 10.83, 1.55)
CIE-LCH	lch(34.92, 10.93, 8.13°)
OKLab	oklab(44.31% 0.0327 0.0042)
OKLCH	oklch(44.31% 0.033 7.3)
XYZ	xyz(9.2880, 8.4578, 8.7311)
Luminance	0.0846 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644C50 #4C6460

analogous

#644C5C #644C50 #64544C

triadic

#644C50 #50644C #4C5064

tetradic

#644C50 #5C644C #4C6460 #544C64

square

#644C50 #5C644C #4C6460 #544C64

split-complementary

#644C50 #4C6454 #4C5C64

monochromatic

#1E1718 #413234 #644C50 #87666C #A4878C

Accessibility & contrast

On white

7.80

#644C50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#644C50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644C50

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644C50	#FFFFFF	#000000	##FFFFFF
##644C50	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F5050

Deuteranopia (green-blind)

#555450

Tritanopia (blue-blind)

#694A4D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #644c50;
/* rgb */ color: rgb(100, 76, 80);
/* oklch */ color: oklch(44.3% 0.033 7.3);

Tailwind

colors: {
  custom: {
    50: '#907e81',
    500: '#644c50',
    950: '#000000',
  },
}

SCSS

$custom: #644c50;
$custom-light: #907e81;
$custom-dark: #000000;

JSON

{
  "hex": "#644c50",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 80
  },
  "hsl": {
    "h": 350,
    "s": 13.636,
    "l": 34.51
  },
  "oklch": {
    "l": 0.44309,
    "c": 0.03299,
    "h": 7.3
  },
  "luminance": 0.08457
}

Semantic roles & 50–950 ramp

primary

#644C50

secondary

#7A918E

accent

#B6AB71

background

#F8F7F7

surface

#F0EEEE

border

#CBC9C9

text

#0C0A0A

muted

#7D7C7C

Preview Lab

Preview with #644C50

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

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