#645D1A#645D1A

#645D1A is a mid, moderate yellow. Relative luminance 0.106; OKLCH L 47.1% C 0.086 H 103.3°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#645D1A
RGB	rgb(100, 93, 26)
HSL	hsl(54, 59%, 25%)
HSV	hsv(54, 74%, 39%)
CMYK	cmyk(0%, 7%, 74%, 60.8%)
CIE-LAB	lab(38.92, -5.86, 37.60)
CIE-LCH	lch(38.92, 38.05, 98.86°)
OKLab	oklab(47.15% -0.0198 0.0838)
OKLCH	oklch(47.15% 0.086 103.3)
XYZ	xyz(9.3567, 10.6130, 2.5327)
Luminance	0.1061 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D1A #1A2164

analogous

#64381A #645D1A #46641A

triadic

#645D1A #1A645D #5D1A64

tetradic

#645D1A #1A6438 #1A2164 #641A46

square

#645D1A #1A6438 #1A2164 #641A46

split-complementary

#645D1A #1A4664 #381A64

monochromatic

#181706 #33300D #645D1A #958A27 #C5B733

Accessibility & contrast

On white

6.73

#645D1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#645D1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D1A

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D1A	#FFFFFF	#000000	##FFFFFF
##645D1A	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665A10

Deuteranopia (green-blind)

#685D1E

Tritanopia (blue-blind)

#6C5650

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645d1a;
/* rgb */ color: rgb(100, 93, 26);
/* oklch */ color: oklch(47.1% 0.086 103.3);

Tailwind

colors: {
  custom: {
    50: '#938a5b',
    500: '#645d1a',
    950: '#000000',
  },
}

SCSS

$custom: #645d1a;
$custom-light: #938a5b;
$custom-dark: #000000;

JSON

{
  "hex": "#645d1a",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 26
  },
  "hsl": {
    "h": 54.324,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.47145,
    "c": 0.08615,
    "h": 103.3
  },
  "luminance": 0.10613
}

Semantic roles & 50–950 ramp

primary

#645D1A

secondary

#40499A

accent

#55E246

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645D1A

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

Preview Lab → · Contrast checker → · Palette generator →