#645B15#645B15

#645B15 is a mid, moderate yellow. Relative luminance 0.102; OKLCH L 46.6% C 0.088 H 101.7°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#645B15
RGB	rgb(100, 91, 21)
HSL	hsl(53, 65%, 24%)
HSV	hsv(53, 79%, 39%)
CMYK	cmyk(0%, 9%, 79%, 60.8%)
CIE-LAB	lab(38.28, -4.96, 39.06)
CIE-LCH	lch(38.28, 39.38, 97.23°)
OKLab	oklab(46.63% -0.0178 0.0859)
OKLCH	oklch(46.63% 0.088 101.7)
XYZ	xyz(9.1324, 10.2460, 2.2060)
Luminance	0.1025 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B15 #151E64

analogous

#643315 #645B15 #456415

triadic

#645B15 #15645B #5B1564

tetradic

#645B15 #156433 #151E64 #641545

square

#645B15 #156433 #151E64 #641545

split-complementary

#645B15 #154564 #331564

monochromatic

#191705 #312D0A #645B15 #978920 #C9B72A

Accessibility & contrast

On white

6.89

#645B15 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#645B15 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B15

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B15	#FFFFFF	#000000	##FFFFFF
##645B15	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)

#645808

Deuteranopia (green-blind)

#675C1A

Tritanopia (blue-blind)

#6C544E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #645b15;
/* rgb */ color: rgb(100, 91, 21);
/* oklch */ color: oklch(46.6% 0.088 101.7);

Tailwind

colors: {
  custom: {
    50: '#938958',
    500: '#645b15',
    950: '#000000',
  },
}

SCSS

$custom: #645b15;
$custom-light: #938958;
$custom-dark: #000000;

JSON

{
  "hex": "#645b15",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 21
  },
  "hsl": {
    "h": 53.165,
    "s": 65.289,
    "l": 23.725
  },
  "oklch": {
    "l": 0.46625,
    "c": 0.08776,
    "h": 101.7
  },
  "luminance": 0.10246
}

Semantic roles & 50–950 ramp

primary

#645B15

secondary

#3A459B

accent

#53E840

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645B15

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

Preview Lab → · Contrast checker → · Palette generator →