#645C41#645C41

#645C41 is a mid, muted yellow. Relative luminance 0.107; OKLCH L 47.5% C 0.042 H 93.6°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#645C41
RGB	rgb(100, 92, 65)
HSL	hsl(46, 21%, 32%)
HSV	hsv(46, 35%, 39%)
CMYK	cmyk(0%, 8%, 35%, 60.8%)
CIE-LAB	lab(39.15, -1.38, 16.74)
CIE-LCH	lch(39.15, 16.79, 94.70°)
OKLab	oklab(47.5% -0.0026 0.0418)
OKLCH	oklch(47.5% 0.042 93.6)
XYZ	xyz(10.0369, 10.7456, 6.5454)
Luminance	0.1075 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C41 #414964

analogous

#644B41 #645C41 #5A6441

triadic

#645C41 #41645C #5C4164

tetradic

#645C41 #41644B #414964 #64415A

square

#645C41 #41644B #414964 #64415A

split-complementary

#645C41 #415A64 #4B4164

monochromatic

#1A1811 #3F3A29 #645C41 #897E59 #A79D78

Accessibility & contrast

On white

6.67

#645C41 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#645C41 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C41

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C41	#FFFFFF	#000000	##FFFFFF
##645C41	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625B3F

Deuteranopia (green-blind)

#645D42

Tritanopia (blue-blind)

#695855

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645c41;
/* rgb */ color: rgb(100, 92, 65);
/* oklch */ color: oklch(47.5% 0.042 93.6);

Tailwind

colors: {
  custom: {
    50: '#918a76',
    500: '#645c41',
    950: '#000000',
  },
}

SCSS

$custom: #645c41;
$custom-light: #918a76;
$custom-dark: #000000;

JSON

{
  "hex": "#645c41",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 65
  },
  "hsl": {
    "h": 46.286,
    "s": 21.212,
    "l": 32.353
  },
  "oklch": {
    "l": 0.47496,
    "c": 0.04192,
    "h": 93.6
  },
  "luminance": 0.10745
}

Semantic roles & 50–950 ramp

primary

#645C41

secondary

#6E7693

accent

#7DBE6A

background

#F8F8F7

surface

#F0F0ED

border

#CBCBC8

text

#0D0B08

muted

#7D7C7B

Preview Lab

Preview with #645C41

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

Preview Lab → · Contrast checker → · Palette generator →