#645D23#645D23

#645D23 is a mid, moderate yellow. Relative luminance 0.107; OKLCH L 47.2% C 0.079 H 102.5°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#645D23
RGB	rgb(100, 93, 35)
HSL	hsl(54, 48%, 26%)
HSV	hsv(54, 65%, 39%)
CMYK	cmyk(0%, 7%, 65%, 60.8%)
CIE-LAB	lab(39.00, -5.25, 33.44)
CIE-LCH	lch(39.00, 33.85, 98.92°)
OKLab	oklab(47.24% -0.0169 0.0767)
OKLCH	oklch(47.24% 0.079 102.5)
XYZ	xyz(9.4736, 10.6597, 3.1483)
Luminance	0.1066 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D23 #232A64

analogous

#643D23 #645D23 #4B6423

triadic

#645D23 #23645D #5D2364

tetradic

#645D23 #23643D #232A64 #64234B

square

#645D23 #23643D #232A64 #64234B

split-complementary

#645D23 #234B64 #3D2364

monochromatic

#171508 #373313 #645D23 #918733 #BEB044

Accessibility & contrast

On white

6.71

#645D23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#645D23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D23

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D23	#FFFFFF	#000000	##FFFFFF
##645D23	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655A1C

Deuteranopia (green-blind)

#685D26

Tritanopia (blue-blind)

#6C5751

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645d23;
/* rgb */ color: rgb(100, 93, 35);
/* oklch */ color: oklch(47.2% 0.079 102.5);

Tailwind

colors: {
  custom: {
    50: '#928a61',
    500: '#645d23',
    950: '#000000',
  },
}

SCSS

$custom: #645d23;
$custom-light: #928a61;
$custom-dark: #000000;

JSON

{
  "hex": "#645d23",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 35
  },
  "hsl": {
    "h": 53.538,
    "s": 48.148,
    "l": 26.471
  },
  "oklch": {
    "l": 0.47235,
    "c": 0.0785,
    "h": 102.5
  },
  "luminance": 0.10659
}

Semantic roles & 50–950 ramp

primary

#645D23

secondary

#4B5398

accent

#5FD850

background

#F9F8F5

surface

#F1F0EA

border

#CBCBC6

text

#0D0B05

muted

#7E7C79

Preview Lab

Preview with #645D23

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

Preview Lab → · Contrast checker → · Palette generator →