#645C19#645C19

#645C19 is a mid, moderate yellow. Relative luminance 0.104; OKLCH L 46.9% C 0.086 H 102.4°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#645C19
RGB	rgb(100, 92, 25)
HSL	hsl(54, 60%, 25%)
HSV	hsv(54, 75%, 39%)
CMYK	cmyk(0%, 8%, 75%, 60.8%)
CIE-LAB	lab(38.61, -5.33, 37.73)
CIE-LCH	lch(38.61, 38.10, 98.05°)
OKLab	oklab(46.9% -0.0184 0.0839)
OKLCH	oklch(46.9% 0.086 102.4)
XYZ	xyz(9.2585, 10.4342, 2.4458)
Luminance	0.1043 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C19 #192164

analogous

#643719 #645C19 #476419

triadic

#645C19 #19645C #5C1964

tetradic

#645C19 #196437 #192164 #641947

square

#645C19 #196437 #192164 #641947

split-complementary

#645C19 #194764 #371964

monochromatic

#181706 #332F0D #645C19 #958925 #C6B631

Accessibility & contrast

On white

6.80

#645C19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#645C19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C19

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C19	#FFFFFF	#000000	##FFFFFF
##645C19	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)

#65590F

Deuteranopia (green-blind)

#675C1D

Tritanopia (blue-blind)

#6C554F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #645c19;
/* rgb */ color: rgb(100, 92, 25);
/* oklch */ color: oklch(46.9% 0.086 102.4);

Tailwind

colors: {
  custom: {
    50: '#93895b',
    500: '#645c19',
    950: '#000000',
  },
}

SCSS

$custom: #645c19;
$custom-light: #93895b;
$custom-dark: #000000;

JSON

{
  "hex": "#645c19",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 25
  },
  "hsl": {
    "h": 53.6,
    "s": 60,
    "l": 24.51
  },
  "oklch": {
    "l": 0.46896,
    "c": 0.08592,
    "h": 102.4
  },
  "luminance": 0.10434
}

Semantic roles & 50–950 ramp

primary

#645C19

secondary

#3F499A

accent

#56E345

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645C19

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

Preview Lab → · Contrast checker → · Palette generator →