#645151#645151

#645151 is a mid, muted red. Relative luminance 0.092; OKLCH L 45.4% C 0.025 H 18.1°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#645151
RGB	rgb(100, 81, 81)
HSL	hsl(0, 10%, 35%)
HSV	hsv(0, 19%, 39%)
CMYK	cmyk(0%, 19%, 19%, 60.8%)
CIE-LAB	lab(36.34, 7.90, 2.98)
CIE-LCH	lch(36.34, 8.44, 20.66°)
OKLab	oklab(45.43% 0.0242 0.0079)
OKLCH	oklch(45.43% 0.025 18.1)
XYZ	xyz(9.6832, 9.1886, 9.0465)
Luminance	0.0919 (WCAG relative)
Temperature	neutral
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645151 #516464

analogous

#64515A #645151 #645A51

triadic

#645151 #516451 #515164

tetradic

#645151 #5A6451 #516464 #5A5164

square

#645151 #5A6451 #516464 #5A5164

split-complementary

#645151 #51645A #515A64

monochromatic

#201A1A #423636 #645151 #866C6C #A38D8D

Accessibility & contrast

On white

7.40

#645151 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#645151 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #645151

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645151	#FFFFFF	#000000	##FFFFFF
##645151	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#545351

Deuteranopia (green-blind)

#595751

Tritanopia (blue-blind)

#684F51

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #645151;
/* rgb */ color: rgb(100, 81, 81);
/* oklch */ color: oklch(45.4% 0.025 18.1);

Tailwind

colors: {
  custom: {
    50: '#908181',
    500: '#645151',
    950: '#000000',
  },
}

SCSS

$custom: #645151;
$custom-light: #908181;
$custom-dark: #000000;

JSON

{
  "hex": "#645151",
  "rgb": {
    "r": 100,
    "g": 81,
    "b": 81
  },
  "hsl": {
    "h": 0,
    "s": 10.497,
    "l": 35.49
  },
  "oklch": {
    "l": 0.45425,
    "c": 0.02544,
    "h": 18.1
  },
  "luminance": 0.09188
}

Semantic roles & 50–950 ramp

primary

#645151

secondary

#809191

accent

#B3B374

background

#F8F7F7

surface

#F0EEEE

border

#CBC9C9

text

#0C0A0A

muted

#7D7C7C

Preview Lab

Preview with #645151

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

Preview Lab → · Contrast checker → · Palette generator →