#645818#645818

#645818 is a mid, moderate yellow. Relative luminance 0.098; OKLCH L 45.9% C 0.083 H 98.3°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#645818
RGB	rgb(100, 88, 24)
HSL	hsl(51, 61%, 24%)
HSV	hsv(51, 76%, 39%)
CMYK	cmyk(0%, 12%, 76%, 60.8%)
CIE-LAB	lab(37.40, -3.03, 36.96)
CIE-LCH	lch(37.40, 37.09, 94.69°)
OKLab	oklab(45.93% -0.012 0.0821)
OKLCH	oklch(45.93% 0.083 98.3)
XYZ	xyz(8.9106, 9.7552, 2.2776)
Luminance	0.0975 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645818 #182464

analogous

#643218 #645818 #4A6418

triadic

#645818 #186458 #581864

tetradic

#645818 #186432 #182464 #64184A

square

#645818 #186432 #182464 #64184A

split-complementary

#645818 #184A64 #321864

monochromatic

#191606 #332D0C #645818 #958324 #C7AF30

Accessibility & contrast

On white

7.12

#645818 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#645818 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #645818

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645818	#FFFFFF	#000000	##FFFFFF
##645818	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61560E

Deuteranopia (green-blind)

#645A1C

Tritanopia (blue-blind)

#6C514B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #645818;
/* rgb */ color: rgb(100, 88, 24);
/* oklch */ color: oklch(45.9% 0.083 98.3);

Tailwind

colors: {
  custom: {
    50: '#93865a',
    500: '#645818',
    950: '#000000',
  },
}

SCSS

$custom: #645818;
$custom-light: #93865a;
$custom-dark: #000000;

JSON

{
  "hex": "#645818",
  "rgb": {
    "r": 100,
    "g": 88,
    "b": 24
  },
  "hsl": {
    "h": 50.526,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.45932,
    "c": 0.08297,
    "h": 98.3
  },
  "luminance": 0.09755
}

Semantic roles & 50–950 ramp

primary

#645818

secondary

#3E4C9A

accent

#5DE443

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645818

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

Preview Lab → · Contrast checker → · Palette generator →