#645D16#645D16

#645D16 is a mid, moderate yellow. Relative luminance 0.106; OKLCH L 47.1% C 0.089 H 103.6°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#645D16
RGB	rgb(100, 93, 22)
HSL	hsl(55, 64%, 24%)
HSV	hsv(55, 78%, 39%)
CMYK	cmyk(0%, 7%, 78%, 60.8%)
CIE-LAB	lab(38.89, -6.08, 39.25)
CIE-LCH	lch(38.89, 39.71, 98.80°)
OKLab	oklab(47.11% -0.0209 0.0865)
OKLCH	oklch(47.11% 0.089 103.6)
XYZ	xyz(9.3151, 10.5963, 2.3135)
Luminance	0.1060 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D16 #161D64

analogous

#643616 #645D16 #446416

triadic

#645D16 #16645D #5D1664

tetradic

#645D16 #166436 #161D64 #641644

square

#645D16 #166436 #161D64 #641644

split-complementary

#645D16 #164464 #361664

monochromatic

#191706 #322E0B #645D16 #968C21 #C8BA2C

Accessibility & contrast

On white

6.73

#645D16 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#645D16 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D16

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D16	#FFFFFF	#000000	##FFFFFF
##645D16	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)

#665A09

Deuteranopia (green-blind)

#685D1B

Tritanopia (blue-blind)

#6C564F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645d16;
/* rgb */ color: rgb(100, 93, 22);
/* oklch */ color: oklch(47.1% 0.089 103.6);

Tailwind

colors: {
  custom: {
    50: '#938a59',
    500: '#645d16',
    950: '#000000',
  },
}

SCSS

$custom: #645d16;
$custom-light: #938a59;
$custom-dark: #000000;

JSON

{
  "hex": "#645d16",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 22
  },
  "hsl": {
    "h": 54.615,
    "s": 63.934,
    "l": 23.922
  },
  "oklch": {
    "l": 0.47113,
    "c": 0.089,
    "h": 103.6
  },
  "luminance": 0.10596
}

Semantic roles & 50–950 ramp

primary

#645D16

secondary

#3B449B

accent

#50E741

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645D16

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

Preview Lab → · Contrast checker → · Palette generator →