#645B1A#645B1A

#645B1A is a mid, moderate yellow. Relative luminance 0.103; OKLCH L 46.7% C 0.084 H 101.3°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#645B1A
RGB	rgb(100, 91, 26)
HSL	hsl(53, 59%, 25%)
HSV	hsv(53, 74%, 39%)
CMYK	cmyk(0%, 9%, 74%, 60.8%)
CIE-LAB	lab(38.32, -4.69, 36.99)
CIE-LCH	lch(38.32, 37.29, 97.22°)
OKLab	oklab(46.67% -0.0165 0.0826)
OKLCH	oklch(46.67% 0.084 101.3)
XYZ	xyz(9.1835, 10.2665, 2.4750)
Luminance	0.1027 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B1A #1A2364

analogous

#64361A #645B1A #48641A

triadic

#645B1A #1A645B #5B1A64

tetradic

#645B1A #1A6436 #1A2364 #641A48

square

#645B1A #1A6436 #1A2364 #641A48

split-complementary

#645B1A #1A4864 #361A64

monochromatic

#181606 #332F0D #645B1A #958727 #C5B333

Accessibility & contrast

On white

6.88

#645B1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#645B1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B1A

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B1A	#FFFFFF	#000000	##FFFFFF
##645B1A	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645810

Deuteranopia (green-blind)

#675C1E

Tritanopia (blue-blind)

#6C544E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645b1a;
/* rgb */ color: rgb(100, 91, 26);
/* oklch */ color: oklch(46.7% 0.084 101.3);

Tailwind

colors: {
  custom: {
    50: '#93895b',
    500: '#645b1a',
    950: '#000000',
  },
}

SCSS

$custom: #645b1a;
$custom-light: #93895b;
$custom-dark: #000000;

JSON

{
  "hex": "#645b1a",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 26
  },
  "hsl": {
    "h": 52.703,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.46665,
    "c": 0.0842,
    "h": 101.3
  },
  "luminance": 0.10266
}

Semantic roles & 50–950 ramp

primary

#645B1A

secondary

#404B9A

accent

#59E246

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645B1A

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

Preview Lab → · Contrast checker → · Palette generator →