#645E1A#645E1A

#645E1A is a mid, moderate yellow. Relative luminance 0.108; OKLCH L 47.4% C 0.087 H 104.2°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#645E1A
RGB	rgb(100, 94, 26)
HSL	hsl(55, 59%, 25%)
HSV	hsv(55, 74%, 39%)
CMYK	cmyk(0%, 6%, 74%, 60.8%)
CIE-LAB	lab(39.22, -6.44, 37.90)
CIE-LCH	lch(39.22, 38.44, 99.64°)
OKLab	oklab(47.39% -0.0214 0.0845)
OKLCH	oklch(47.39% 0.087 104.2)
XYZ	xyz(9.4451, 10.7897, 2.5622)
Luminance	0.1079 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E1A #1A2064

analogous

#64391A #645E1A #45641A

triadic

#645E1A #1A645E #5E1A64

tetradic

#645E1A #1A6439 #1A2064 #641A45

square

#645E1A #1A6439 #1A2064 #641A45

split-complementary

#645E1A #1A4564 #391A64

monochromatic

#181706 #33300D #645E1A #958C27 #C5B933

Accessibility & contrast

On white

6.65

#645E1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#645E1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E1A

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E1A	#FFFFFF	#000000	##FFFFFF
##645E1A	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675B10

Deuteranopia (green-blind)

#695E1E

Tritanopia (blue-blind)

#6C5750

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645e1a;
/* rgb */ color: rgb(100, 94, 26);
/* oklch */ color: oklch(47.4% 0.087 104.2);

Tailwind

colors: {
  custom: {
    50: '#938b5b',
    500: '#645e1a',
    950: '#000000',
  },
}

SCSS

$custom: #645e1a;
$custom-light: #938b5b;
$custom-dark: #000000;

JSON

{
  "hex": "#645e1a",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 26
  },
  "hsl": {
    "h": 55.135,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.47386,
    "c": 0.08717,
    "h": 104.2
  },
  "luminance": 0.10789
}

Semantic roles & 50–950 ramp

primary

#645E1A

secondary

#40479A

accent

#53E246

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645E1A

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

Preview Lab → · Contrast checker → · Palette generator →