#645C1A#645C1A

#645C1A is a mid, moderate yellow. Relative luminance 0.104; OKLCH L 46.9% C 0.085 H 102.3°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#645C1A
RGB	rgb(100, 92, 26)
HSL	hsl(54, 59%, 25%)
HSV	hsv(54, 74%, 39%)
CMYK	cmyk(0%, 8%, 74%, 60.8%)
CIE-LAB	lab(38.62, -5.27, 37.30)
CIE-LCH	lch(38.62, 37.67, 98.05°)
OKLab	oklab(46.91% -0.0181 0.0832)
OKLCH	oklch(46.91% 0.085 102.3)
XYZ	xyz(9.2695, 10.4386, 2.5037)
Luminance	0.1044 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C1A #1A2264

analogous

#64371A #645C1A #47641A

triadic

#645C1A #1A645C #5C1A64

tetradic

#645C1A #1A6437 #1A2264 #641A47

square

#645C1A #1A6437 #1A2264 #641A47

split-complementary

#645C1A #1A4764 #371A64

monochromatic

#181606 #332F0D #645C1A #958927 #C5B533

Accessibility & contrast

On white

6.80

#645C1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#645C1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C1A

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C1A	#FFFFFF	#000000	##FFFFFF
##645C1A	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655910

Deuteranopia (green-blind)

#675C1E

Tritanopia (blue-blind)

#6C554F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #645c1a;
/* rgb */ color: rgb(100, 92, 26);
/* oklch */ color: oklch(46.9% 0.085 102.3);

Tailwind

colors: {
  custom: {
    50: '#93895b',
    500: '#645c1a',
    950: '#000000',
  },
}

SCSS

$custom: #645c1a;
$custom-light: #93895b;
$custom-dark: #000000;

JSON

{
  "hex": "#645c1a",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 26
  },
  "hsl": {
    "h": 53.514,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.46905,
    "c": 0.08516,
    "h": 102.3
  },
  "luminance": 0.10438
}

Semantic roles & 50–950 ramp

primary

#645C1A

secondary

#404A9A

accent

#57E246

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645C1A

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

Preview Lab → · Contrast checker → · Palette generator →