#645E17#645E17

#645E17 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 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#645E17
RGB	rgb(100, 94, 23)
HSL	hsl(55, 63%, 24%)
HSV	hsv(55, 77%, 39%)
CMYK	cmyk(0%, 6%, 77%, 60.8%)
CIE-LAB	lab(39.20, -6.61, 39.14)
CIE-LCH	lch(39.20, 39.69, 99.58°)
OKLab	oklab(47.36% -0.0222 0.0865)
OKLCH	oklch(47.36% 0.089 104.4)
XYZ	xyz(9.4133, 10.7770, 2.3948)
Luminance	0.1078 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E17 #171D64

analogous

#643817 #645E17 #446417

triadic

#645E17 #17645E #5E1764

tetradic

#645E17 #176438 #171D64 #641744

square

#645E17 #176438 #171D64 #641744

split-complementary

#645E17 #174464 #381764

monochromatic

#191706 #322F0C #645E17 #968D22 #C8BC2E

Accessibility & contrast

On white

6.66

#645E17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#645E17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E17

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E17	#FFFFFF	#000000	##FFFFFF
##645E17	1.00	6.66	3.16	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675B0A

Deuteranopia (green-blind)

#695E1C

Tritanopia (blue-blind)

#6C5750

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645e17;
/* rgb */ color: rgb(100, 94, 23);
/* oklch */ color: oklch(47.4% 0.089 104.4);

Tailwind

colors: {
  custom: {
    50: '#938b5a',
    500: '#645e17',
    950: '#000000',
  },
}

SCSS

$custom: #645e17;
$custom-light: #938b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#645e17",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 23
  },
  "hsl": {
    "h": 55.325,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.47362,
    "c": 0.08933,
    "h": 104.4
  },
  "luminance": 0.10777
}

Semantic roles & 50–950 ramp

primary

#645E17

secondary

#3C449A

accent

#4FE642

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645E17

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

Preview Lab → · Contrast checker → · Palette generator →