#645E1D#645E1D

#645E1D is a mid, moderate yellow. Relative luminance 0.108; OKLCH L 47.4% C 0.085 H 104.0°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#645E1D
RGB	rgb(100, 94, 29)
HSL	hsl(55, 55%, 25%)
HSV	hsv(55, 71%, 39%)
CMYK	cmyk(0%, 6%, 71%, 60.8%)
CIE-LAB	lab(39.25, -6.26, 36.59)
CIE-LCH	lch(39.25, 37.12, 99.70°)
OKLab	oklab(47.41% -0.0205 0.0823)
OKLCH	oklch(47.41% 0.085 104)
XYZ	xyz(9.4804, 10.8038, 2.7481)
Luminance	0.1080 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E1D #1D2364

analogous

#643B1D #645E1D #46641D

triadic

#645E1D #1D645E #5E1D64

tetradic

#645E1D #1D643B #1D2364 #641D46

square

#645E1D #1D643B #1D2364 #641D46

split-complementary

#645E1D #1D4664 #3B1D64

monochromatic

#181607 #35310F #645E1D #938B2B #C3B739

Accessibility & contrast

On white

6.64

#645E1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#645E1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E1D

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E1D	#FFFFFF	#000000	##FFFFFF
##645E1D	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675B14

Deuteranopia (green-blind)

#695E21

Tritanopia (blue-blind)

#6C5751

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645e1d;
/* rgb */ color: rgb(100, 94, 29);
/* oklch */ color: oklch(47.4% 0.085 104.0);

Tailwind

colors: {
  custom: {
    50: '#938b5d',
    500: '#645e1d',
    950: '#000000',
  },
}

SCSS

$custom: #645e1d;
$custom-light: #938b5d;
$custom-dark: #000000;

JSON

{
  "hex": "#645e1d",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 29
  },
  "hsl": {
    "h": 54.93,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.47413,
    "c": 0.08482,
    "h": 104
  },
  "luminance": 0.10803
}

Semantic roles & 50–950 ramp

primary

#645E1D

secondary

#444B99

accent

#56DE49

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645E1D

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

Preview Lab → · Contrast checker → · Palette generator →