#645C3E#645C3E

#645C3E is a mid, muted yellow. Relative luminance 0.107; OKLCH L 47.4% C 0.046 H 95.0°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#645C3E
RGB	rgb(100, 92, 62)
HSL	hsl(47, 23%, 32%)
HSV	hsv(47, 38%, 39%)
CMYK	cmyk(0%, 8%, 38%, 60.8%)
CIE-LAB	lab(39.09, -1.79, 18.46)
CIE-LCH	lch(39.09, 18.54, 95.55°)
OKLab	oklab(47.43% -0.004 0.0458)
OKLCH	oklch(47.43% 0.046 95)
XYZ	xyz(9.9523, 10.7117, 6.0998)
Luminance	0.1071 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C3E #3E4664

analogous

#64493E #645C3E #59643E

triadic

#645C3E #3E645C #5C3E64

tetradic

#645C3E #3E6449 #3E4664 #643E59

square

#645C3E #3E6449 #3E4664 #643E59

split-complementary

#645C3E #3E5964 #493E64

monochromatic

#18160F #3E3927 #645C3E #8A7F55 #A99E74

Accessibility & contrast

On white

6.68

#645C3E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#645C3E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C3E

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C3E	#FFFFFF	#000000	##FFFFFF
##645C3E	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625B3C

Deuteranopia (green-blind)

#645D3F

Tritanopia (blue-blind)

#6A5854

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645c3e;
/* rgb */ color: rgb(100, 92, 62);
/* oklch */ color: oklch(47.4% 0.046 95.0);

Tailwind

colors: {
  custom: {
    50: '#918a73',
    500: '#645c3e',
    950: '#000000',
  },
}

SCSS

$custom: #645c3e;
$custom-light: #918a73;
$custom-dark: #000000;

JSON

{
  "hex": "#645c3e",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 62
  },
  "hsl": {
    "h": 47.368,
    "s": 23.457,
    "l": 31.765
  },
  "oklch": {
    "l": 0.47432,
    "c": 0.04596,
    "h": 95
  },
  "luminance": 0.10711
}

Semantic roles & 50–950 ramp

primary

#645C3E

secondary

#6A7394

accent

#7AC068

background

#F8F8F7

surface

#F0F0ED

border

#CBCBC8

text

#0D0B08

muted

#7D7C7B

Preview Lab

Preview with #645C3E

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

Preview Lab → · Contrast checker → · Palette generator →