#645A18#645A18

#645A18 is a mid, moderate yellow. Relative luminance 0.101; OKLCH L 46.4% C 0.085 H 100.4°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#645A18
RGB	rgb(100, 90, 24)
HSL	hsl(52, 61%, 24%)
HSV	hsv(52, 76%, 39%)
CMYK	cmyk(0%, 10%, 76%, 60.8%)
CIE-LAB	lab(38.00, -4.21, 37.55)
CIE-LCH	lch(38.00, 37.79, 96.40°)
OKLab	oklab(46.41% -0.0154 0.0833)
OKLCH	oklch(46.41% 0.085 100.4)
XYZ	xyz(9.0770, 10.0880, 2.3330)
Luminance	0.1009 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A18 #182264

analogous

#643418 #645A18 #486418

triadic

#645A18 #18645A #5A1864

tetradic

#645A18 #186434 #182264 #641848

square

#645A18 #186434 #182264 #641848

split-complementary

#645A18 #184864 #341864

monochromatic

#191606 #332E0C #645A18 #958624 #C7B330

Accessibility & contrast

On white

6.96

#645A18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#645A18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A18

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A18	#FFFFFF	#000000	##FFFFFF
##645A18	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#63570D

Deuteranopia (green-blind)

#665B1C

Tritanopia (blue-blind)

#6C534D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #645a18;
/* rgb */ color: rgb(100, 90, 24);
/* oklch */ color: oklch(46.4% 0.085 100.4);

Tailwind

colors: {
  custom: {
    50: '#93885a',
    500: '#645a18',
    950: '#000000',
  },
}

SCSS

$custom: #645a18;
$custom-light: #93885a;
$custom-dark: #000000;

JSON

{
  "hex": "#645a18",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 24
  },
  "hsl": {
    "h": 52.105,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.46409,
    "c": 0.08476,
    "h": 100.4
  },
  "luminance": 0.10088
}

Semantic roles & 50–950 ramp

primary

#645A18

secondary

#3E4A9A

accent

#59E443

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645A18

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

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