#645E1C#645E1C

#645E1C is a mid, moderate yellow. Relative luminance 0.108; OKLCH L 47.4% C 0.086 H 104.1°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#645E1C
RGB	rgb(100, 94, 28)
HSL	hsl(55, 56%, 25%)
HSV	hsv(55, 72%, 39%)
CMYK	cmyk(0%, 6%, 72%, 60.8%)
CIE-LAB	lab(39.24, -6.32, 37.03)
CIE-LCH	lch(39.24, 37.57, 99.68°)
OKLab	oklab(47.4% -0.0209 0.083)
OKLCH	oklch(47.4% 0.086 104.1)
XYZ	xyz(9.4682, 10.7989, 2.6840)
Luminance	0.1080 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E1C #1C2264

analogous

#643A1C #645E1C #46641C

triadic

#645E1C #1C645E #5E1C64

tetradic

#645E1C #1C643A #1C2264 #641C46

square

#645E1C #1C643A #1C2264 #641C46

split-complementary

#645E1C #1C4664 #3A1C64

monochromatic

#181607 #34310F #645E1C #948B29 #C4B837

Accessibility & contrast

On white

6.65

#645E1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#645E1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E1C

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E1C	#FFFFFF	#000000	##FFFFFF
##645E1C	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)

#675B13

Deuteranopia (green-blind)

#695E20

Tritanopia (blue-blind)

#6C5751

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645e1c;
/* rgb */ color: rgb(100, 94, 28);
/* oklch */ color: oklch(47.4% 0.086 104.1);

Tailwind

colors: {
  custom: {
    50: '#938b5c',
    500: '#645e1c',
    950: '#000000',
  },
}

SCSS

$custom: #645e1c;
$custom-light: #938b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#645e1c",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 28
  },
  "hsl": {
    "h": 55,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.47404,
    "c": 0.08562,
    "h": 104.1
  },
  "luminance": 0.10799
}

Semantic roles & 50–950 ramp

primary

#645E1C

secondary

#434A99

accent

#55E048

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645E1C

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

Preview Lab → · Contrast checker → · Palette generator →