#645B10#645B10

#645B10 is a mid, moderate yellow. Relative luminance 0.102; OKLCH L 46.6% C 0.091 H 102.1°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#645B10
RGB	rgb(100, 91, 16)
HSL	hsl(54, 72%, 23%)
HSV	hsv(54, 84%, 39%)
CMYK	cmyk(0%, 9%, 84%, 60.8%)
CIE-LAB	lab(38.25, -5.18, 40.89)
CIE-LCH	lch(38.25, 41.22, 97.22°)
OKLab	oklab(46.59% -0.019 0.0887)
OKLCH	oklch(46.59% 0.091 102.1)
XYZ	xyz(9.0906, 10.2293, 1.9857)
Luminance	0.1023 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B10 #101964

analogous

#643110 #645B10 #436410

triadic

#645B10 #10645B #5B1064

tetradic

#645B10 #106431 #101964 #641043

square

#645B10 #106431 #101964 #641043

split-complementary

#645B10 #104364 #311064

monochromatic

#1A1804 #2F2B08 #645B10 #998B18 #CEBB21

Accessibility & contrast

On white

6.89

#645B10 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#645B10 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B10

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B10	#FFFFFF	#000000	##FFFFFF
##645B10	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)

#645800

Deuteranopia (green-blind)

#675C16

Tritanopia (blue-blind)

#6C544D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645b10;
/* rgb */ color: rgb(100, 91, 16);
/* oklch */ color: oklch(46.6% 0.091 102.1);

Tailwind

colors: {
  custom: {
    50: '#938956',
    500: '#645b10',
    950: '#000000',
  },
}

SCSS

$custom: #645b10;
$custom-light: #938956;
$custom-dark: #000000;

JSON

{
  "hex": "#645b10",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 16
  },
  "hsl": {
    "h": 53.571,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.46592,
    "c": 0.09074,
    "h": 102.1
  },
  "luminance": 0.10229
}

Semantic roles & 50–950 ramp

primary

#645B10

secondary

#333F9D

accent

#4CEF39

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B03

muted

#7E7C78

Preview Lab

Preview with #645B10

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

Preview Lab → · Contrast checker → · Palette generator →