#645F2F#645F2F

#645F2F is a mid, moderate yellow. Relative luminance 0.111; OKLCH L 47.9% C 0.068 H 103.3°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#645F2F
RGB	rgb(100, 95, 47)
HSL	hsl(54, 36%, 29%)
HSV	hsv(54, 53%, 39%)
CMYK	cmyk(0%, 5%, 53%, 60.8%)
CIE-LAB	lab(39.75, -5.34, 27.95)
CIE-LCH	lch(39.75, 28.45, 100.83°)
OKLab	oklab(47.87% -0.0157 0.0663)
OKLCH	oklch(47.87% 0.068 103.3)
XYZ	xyz(9.8611, 11.0993, 4.3117)
Luminance	0.1110 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645F2F #2F3464

analogous

#64452F #645F2F #4F642F

triadic

#645F2F #2F645F #5F2F64

tetradic

#645F2F #2F6445 #2F3464 #642F4F

square

#645F2F #2F6445 #2F3464 #642F4F

split-complementary

#645F2F #2F4F64 #452F64

monochromatic

#15140A #3A371B #645F2F #8E8743 #B2AA5B

Accessibility & contrast

On white

6.52

#645F2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#645F2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645F2F

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645F2F	#FFFFFF	#000000	##FFFFFF
##645F2F	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665C2B

Deuteranopia (green-blind)

#685F31

Tritanopia (blue-blind)

#6B5954

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #645f2f;
/* rgb */ color: rgb(100, 95, 47);
/* oklch */ color: oklch(47.9% 0.068 103.3);

Tailwind

colors: {
  custom: {
    50: '#918c69',
    500: '#645f2f',
    950: '#000000',
  },
}

SCSS

$custom: #645f2f;
$custom-light: #918c69;
$custom-dark: #000000;

JSON

{
  "hex": "#645f2f",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 47
  },
  "hsl": {
    "h": 54.34,
    "s": 36.054,
    "l": 28.824
  },
  "oklch": {
    "l": 0.47873,
    "c": 0.06813,
    "h": 103.3
  },
  "luminance": 0.11099
}

Semantic roles & 50–950 ramp

primary

#645F2F

secondary

#595F96

accent

#66CC5C

background

#F9F8F6

surface

#F1F0EB

border

#CBCBC6

text

#0D0C06

muted

#7E7D7A

Preview Lab

Preview with #645F2F

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

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