#645A19#645A19

#645A19 is a mid, moderate yellow. Relative luminance 0.101; OKLCH L 46.4% C 0.084 H 100.3°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#645A19
RGB	rgb(100, 90, 25)
HSL	hsl(52, 60%, 25%)
HSV	hsv(52, 75%, 39%)
CMYK	cmyk(0%, 10%, 75%, 60.8%)
CIE-LAB	lab(38.01, -4.16, 37.13)
CIE-LCH	lch(38.01, 37.36, 96.39°)
OKLab	oklab(46.42% -0.0151 0.0827)
OKLCH	oklch(46.42% 0.084 100.3)
XYZ	xyz(9.0876, 10.0923, 2.3888)
Luminance	0.1009 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A19 #192364

analogous

#643519 #645A19 #496419

triadic

#645A19 #19645A #5A1964

tetradic

#645A19 #196435 #192364 #641949

square

#645A19 #196435 #192364 #641949

split-complementary

#645A19 #194964 #351964

monochromatic

#181606 #332E0D #645A19 #958625 #C6B231

Accessibility & contrast

On white

6.96

#645A19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#645A19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A19

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A19	#FFFFFF	#000000	##FFFFFF
##645A19	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#63570F

Deuteranopia (green-blind)

#665B1D

Tritanopia (blue-blind)

#6C534D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #645a19;
/* rgb */ color: rgb(100, 90, 25);
/* oklch */ color: oklch(46.4% 0.084 100.3);

Tailwind

colors: {
  custom: {
    50: '#93885a',
    500: '#645a19',
    950: '#000000',
  },
}

SCSS

$custom: #645a19;
$custom-light: #93885a;
$custom-dark: #000000;

JSON

{
  "hex": "#645a19",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 25
  },
  "hsl": {
    "h": 52,
    "s": 60,
    "l": 24.51
  },
  "oklch": {
    "l": 0.46417,
    "c": 0.08402,
    "h": 100.3
  },
  "luminance": 0.10092
}

Semantic roles & 50–950 ramp

primary

#645A19

secondary

#3F4B9A

accent

#5AE345

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645A19

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

Preview Lab → · Contrast checker → · Palette generator →