#645E18#645E18

#645E18 is a mid, moderate yellow. Relative luminance 0.108; OKLCH L 47.4% C 0.089 H 104.4°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#645E18
RGB	rgb(100, 94, 24)
HSL	hsl(55, 61%, 24%)
HSV	hsv(55, 76%, 39%)
CMYK	cmyk(0%, 6%, 76%, 60.8%)
CIE-LAB	lab(39.21, -6.55, 38.74)
CIE-LCH	lch(39.21, 39.29, 99.60°)
OKLab	oklab(47.37% -0.022 0.0859)
OKLCH	oklch(47.37% 0.089 104.4)
XYZ	xyz(9.4235, 10.7811, 2.4485)
Luminance	0.1078 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E18 #181E64

analogous

#643818 #645E18 #446418

triadic

#645E18 #18645E #5E1864

tetradic

#645E18 #186438 #181E64 #641844

square

#645E18 #186438 #181E64 #641844

split-complementary

#645E18 #184464 #381864

monochromatic

#191706 #33300C #645E18 #958C24 #C7BB30

Accessibility & contrast

On white

6.65

#645E18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#645E18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E18

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E18	#FFFFFF	#000000	##FFFFFF
##645E18	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)

#675B0C

Deuteranopia (green-blind)

#695E1D

Tritanopia (blue-blind)

#6C5750

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645e18;
/* rgb */ color: rgb(100, 94, 24);
/* oklch */ color: oklch(47.4% 0.089 104.4);

Tailwind

colors: {
  custom: {
    50: '#938b5a',
    500: '#645e18',
    950: '#000000',
  },
}

SCSS

$custom: #645e18;
$custom-light: #938b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#645e18",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 24
  },
  "hsl": {
    "h": 55.263,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.4737,
    "c": 0.08862,
    "h": 104.4
  },
  "luminance": 0.10781
}

Semantic roles & 50–950 ramp

primary

#645E18

secondary

#3E459A

accent

#50E443

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645E18

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

Preview Lab → · Contrast checker → · Palette generator →