#645A1D#645A1D

#645A1D is a mid, moderate yellow. Relative luminance 0.101; OKLCH L 46.5% C 0.081 H 99.9°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#645A1D
RGB	rgb(100, 90, 29)
HSL	hsl(52, 55%, 25%)
HSV	hsv(52, 71%, 39%)
CMYK	cmyk(0%, 10%, 71%, 60.8%)
CIE-LAB	lab(38.04, -3.91, 35.34)
CIE-LCH	lch(38.04, 35.56, 96.32°)
OKLab	oklab(46.45% -0.0139 0.0797)
OKLCH	oklch(46.45% 0.081 99.9)
XYZ	xyz(9.1339, 10.1108, 2.6326)
Luminance	0.1011 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A1D #1D2764

analogous

#64361D #645A1D #4B641D

triadic

#645A1D #1D645A #5A1D64

tetradic

#645A1D #1D6436 #1D2764 #641D4B

square

#645A1D #1D6436 #1D2764 #641D4B

split-complementary

#645A1D #1D4B64 #361D64

monochromatic

#181507 #352F0F #645A1D #93852B #C3AF39

Accessibility & contrast

On white

6.95

#645A1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#645A1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A1D

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A1D	#FFFFFF	#000000	##FFFFFF
##645A1D	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635715

Deuteranopia (green-blind)

#665B20

Tritanopia (blue-blind)

#6C534D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645a1d;
/* rgb */ color: rgb(100, 90, 29);
/* oklch */ color: oklch(46.5% 0.081 99.9);

Tailwind

colors: {
  custom: {
    50: '#93885d',
    500: '#645a1d',
    950: '#000000',
  },
}

SCSS

$custom: #645a1d;
$custom-light: #93885d;
$custom-dark: #000000;

JSON

{
  "hex": "#645a1d",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 29
  },
  "hsl": {
    "h": 51.549,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.46454,
    "c": 0.08085,
    "h": 99.9
  },
  "luminance": 0.1011
}

Semantic roles & 50–950 ramp

primary

#645A1D

secondary

#445099

accent

#5EDE49

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645A1D

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

Preview Lab → · Contrast checker → · Palette generator →