#645F2B#645F2B

#645F2B is a mid, moderate yellow. Relative luminance 0.111; OKLCH L 47.8% C 0.073 H 103.8°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#645F2B
RGB	rgb(100, 95, 43)
HSL	hsl(55, 40%, 28%)
HSV	hsv(55, 57%, 39%)
CMYK	cmyk(0%, 5%, 57%, 60.8%)
CIE-LAB	lab(39.70, -5.74, 30.07)
CIE-LCH	lch(39.70, 30.61, 100.80°)
OKLab	oklab(47.82% -0.0173 0.0705)
OKLCH	oklch(47.82% 0.073 103.8)
XYZ	xyz(9.7841, 11.0685, 3.9061)
Luminance	0.1107 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645F2B #2B3064

analogous

#64422B #645F2B #4C642B

triadic

#645F2B #2B645F #5F2B64

tetradic

#645F2B #2B6442 #2B3064 #642B4C

square

#645F2B #2B6442 #2B3064 #642B4C

split-complementary

#645F2B #2B4C64 #422B64

monochromatic

#151409 #393619 #645F2B #8F883D #B5AD54

Accessibility & contrast

On white

6.53

#645F2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#645F2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645F2B

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645F2B	#FFFFFF	#000000	##FFFFFF
##645F2B	1.00	6.53	3.21	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675C26

Deuteranopia (green-blind)

#685F2E

Tritanopia (blue-blind)

#6B5953

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #645f2b;
/* rgb */ color: rgb(100, 95, 43);
/* oklch */ color: oklch(47.8% 0.073 103.8);

Tailwind

colors: {
  custom: {
    50: '#928c66',
    500: '#645f2b',
    950: '#000000',
  },
}

SCSS

$custom: #645f2b;
$custom-light: #928c66;
$custom-dark: #000000;

JSON

{
  "hex": "#645f2b",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 43
  },
  "hsl": {
    "h": 54.737,
    "s": 39.86,
    "l": 28.039
  },
  "oklch": {
    "l": 0.47815,
    "c": 0.07258,
    "h": 103.8
  },
  "luminance": 0.11068
}

Semantic roles & 50–950 ramp

primary

#645F2B

secondary

#555A96

accent

#63D058

background

#F9F8F6

surface

#F1F0EB

border

#CBCBC6

text

#0D0C06

muted

#7E7D7A

Preview Lab

Preview with #645F2B

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

Preview Lab → · Contrast checker → · Palette generator →