#645B13#645B13

#645B13 is a mid, moderate yellow. Relative luminance 0.102; OKLCH L 46.6% C 0.089 H 101.9°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#645B13
RGB	rgb(100, 91, 19)
HSL	hsl(53, 68%, 23%)
HSV	hsv(53, 81%, 39%)
CMYK	cmyk(0%, 9%, 81%, 60.8%)
CIE-LAB	lab(38.27, -5.05, 39.83)
CIE-LCH	lch(38.27, 40.15, 97.23°)
OKLab	oklab(46.61% -0.0183 0.0871)
OKLCH	oklch(46.61% 0.089 101.9)
XYZ	xyz(9.1146, 10.2389, 2.1122)
Luminance	0.1024 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B13 #131C64

analogous

#643213 #645B13 #446413

triadic

#645B13 #13645B #5B1364

tetradic

#645B13 #136432 #131C64 #641344

square

#645B13 #136432 #131C64 #641344

split-complementary

#645B13 #134464 #321364

monochromatic

#1A1705 #312C09 #645B13 #978A1D #CBB927

Accessibility & contrast

On white

6.89

#645B13 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#645B13 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B13

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B13	#FFFFFF	#000000	##FFFFFF
##645B13	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)

#645804

Deuteranopia (green-blind)

#675C18

Tritanopia (blue-blind)

#6C544D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645b13;
/* rgb */ color: rgb(100, 91, 19);
/* oklch */ color: oklch(46.6% 0.089 101.9);

Tailwind

colors: {
  custom: {
    50: '#938957',
    500: '#645b13',
    950: '#000000',
  },
}

SCSS

$custom: #645b13;
$custom-light: #938957;
$custom-dark: #000000;

JSON

{
  "hex": "#645b13",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 19
  },
  "hsl": {
    "h": 53.333,
    "s": 68.067,
    "l": 23.333
  },
  "oklch": {
    "l": 0.46611,
    "c": 0.08902,
    "h": 101.9
  },
  "luminance": 0.10239
}

Semantic roles & 50–950 ramp

primary

#645B13

secondary

#37429C

accent

#50EB3D

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B03

muted

#7E7C78

Preview Lab

Preview with #645B13

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

Preview Lab → · Contrast checker → · Palette generator →