#645C17#645C17

#645C17 is a mid, moderate yellow. Relative luminance 0.104; OKLCH L 46.9% C 0.087 H 102.5°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#645C17
RGB	rgb(100, 92, 23)
HSL	hsl(54, 63%, 24%)
HSV	hsv(54, 77%, 39%)
CMYK	cmyk(0%, 8%, 77%, 60.8%)
CIE-LAB	lab(38.60, -5.44, 38.56)
CIE-LCH	lch(38.60, 38.94, 98.04°)
OKLab	oklab(46.88% -0.019 0.0853)
OKLCH	oklch(46.88% 0.087 102.5)
XYZ	xyz(9.2377, 10.4259, 2.3362)
Luminance	0.1042 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C17 #171F64

analogous

#643617 #645C17 #466417

triadic

#645C17 #17645C #5C1764

tetradic

#645C17 #176436 #171F64 #641746

square

#645C17 #176436 #171F64 #641746

split-complementary

#645C17 #174664 #361764

monochromatic

#191706 #322E0C #645C17 #968A22 #C8B82E

Accessibility & contrast

On white

6.81

#645C17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#645C17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C17

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C17	#FFFFFF	#000000	##FFFFFF
##645C17	1.00	6.81	3.09	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#65590B

Deuteranopia (green-blind)

#675C1C

Tritanopia (blue-blind)

#6C554F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #645c17;
/* rgb */ color: rgb(100, 92, 23);
/* oklch */ color: oklch(46.9% 0.087 102.5);

Tailwind

colors: {
  custom: {
    50: '#938959',
    500: '#645c17',
    950: '#000000',
  },
}

SCSS

$custom: #645c17;
$custom-light: #938959;
$custom-dark: #000000;

JSON

{
  "hex": "#645c17",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 23
  },
  "hsl": {
    "h": 53.766,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.4688,
    "c": 0.08735,
    "h": 102.5
  },
  "luminance": 0.10425
}

Semantic roles & 50–950 ramp

primary

#645C17

secondary

#3C469A

accent

#53E642

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645C17

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

Preview Lab → · Contrast checker → · Palette generator →