#645B16#645B16

#645B16 is a mid, moderate yellow. Relative luminance 0.102; OKLCH L 46.6% C 0.087 H 101.6°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#645B16
RGB	rgb(100, 91, 22)
HSL	hsl(53, 64%, 24%)
HSV	hsv(53, 78%, 39%)
CMYK	cmyk(0%, 9%, 78%, 60.8%)
CIE-LAB	lab(38.29, -4.91, 38.67)
CIE-LCH	lch(38.29, 38.98, 97.23°)
OKLab	oklab(46.63% -0.0176 0.0853)
OKLCH	oklch(46.63% 0.087 101.6)
XYZ	xyz(9.1419, 10.2498, 2.2558)
Luminance	0.1025 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B16 #161F64

analogous

#643416 #645B16 #466416

triadic

#645B16 #16645B #5B1664

tetradic

#645B16 #166434 #161F64 #641646

square

#645B16 #166434 #161F64 #641646

split-complementary

#645B16 #164664 #341664

monochromatic

#191706 #322D0B #645B16 #968921 #C8B62C

Accessibility & contrast

On white

6.89

#645B16 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#645B16 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B16

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B16	#FFFFFF	#000000	##FFFFFF
##645B16	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#64580A

Deuteranopia (green-blind)

#675C1B

Tritanopia (blue-blind)

#6C544E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645b16;
/* rgb */ color: rgb(100, 91, 22);
/* oklch */ color: oklch(46.6% 0.087 101.6);

Tailwind

colors: {
  custom: {
    50: '#938959',
    500: '#645b16',
    950: '#000000',
  },
}

SCSS

$custom: #645b16;
$custom-light: #938959;
$custom-dark: #000000;

JSON

{
  "hex": "#645b16",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 22
  },
  "hsl": {
    "h": 53.077,
    "s": 63.934,
    "l": 23.922
  },
  "oklch": {
    "l": 0.46632,
    "c": 0.08709,
    "h": 101.6
  },
  "luminance": 0.10249
}

Semantic roles & 50–950 ramp

primary

#645B16

secondary

#3B469B

accent

#54E741

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645B16

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

Preview Lab → · Contrast checker → · Palette generator →