#645D17#645D17

#645D17 is a mid, moderate yellow. Relative luminance 0.106; OKLCH L 47.1% C 0.088 H 103.5°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#645D17
RGB	rgb(100, 93, 23)
HSL	hsl(55, 63%, 24%)
HSV	hsv(55, 77%, 39%)
CMYK	cmyk(0%, 7%, 77%, 60.8%)
CIE-LAB	lab(38.90, -6.03, 38.85)
CIE-LCH	lch(38.90, 39.31, 98.82°)
OKLab	oklab(47.12% -0.0206 0.0859)
OKLCH	oklch(47.12% 0.088 103.5)
XYZ	xyz(9.3249, 10.6003, 2.3653)
Luminance	0.1060 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D17 #171E64

analogous

#643717 #645D17 #456417

triadic

#645D17 #17645D #5D1764

tetradic

#645D17 #176437 #171E64 #641745

square

#645D17 #176437 #171E64 #641745

split-complementary

#645D17 #174564 #371764

monochromatic

#191706 #322F0C #645D17 #968B22 #C8BA2E

Accessibility & contrast

On white

6.73

#645D17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#645D17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D17

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D17	#FFFFFF	#000000	##FFFFFF
##645D17	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665A0B

Deuteranopia (green-blind)

#685D1C

Tritanopia (blue-blind)

#6C564F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645d17;
/* rgb */ color: rgb(100, 93, 23);
/* oklch */ color: oklch(47.1% 0.088 103.5);

Tailwind

colors: {
  custom: {
    50: '#938a5a',
    500: '#645d17',
    950: '#000000',
  },
}

SCSS

$custom: #645d17;
$custom-light: #938a5a;
$custom-dark: #000000;

JSON

{
  "hex": "#645d17",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 23
  },
  "hsl": {
    "h": 54.545,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.4712,
    "c": 0.08833,
    "h": 103.5
  },
  "luminance": 0.106
}

Semantic roles & 50–950 ramp

primary

#645D17

secondary

#3C459A

accent

#51E642

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645D17

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

Preview Lab → · Contrast checker → · Palette generator →