#645F17#645F17

#645F17 is a mid, moderate yellow. Relative luminance 0.110; OKLCH L 47.6% C 0.090 H 105.3°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#645F17
RGB	rgb(100, 95, 23)
HSL	hsl(56, 63%, 24%)
HSV	hsv(56, 77%, 39%)
CMYK	cmyk(0%, 5%, 77%, 60.8%)
CIE-LAB	lab(39.51, -7.19, 39.43)
CIE-LCH	lch(39.51, 40.08, 100.33°)
OKLab	oklab(47.6% -0.0239 0.0871)
OKLCH	oklch(47.6% 0.09 105.3)
XYZ	xyz(9.5028, 10.9560, 2.4246)
Luminance	0.1096 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645F17 #171C64

analogous

#643917 #645F17 #436417

triadic

#645F17 #17645F #5F1764

tetradic

#645F17 #176439 #171C64 #641743

square

#645F17 #176439 #171C64 #641743

split-complementary

#645F17 #174364 #391764

monochromatic

#191806 #32300C #645F17 #968E22 #C8BE2E

Accessibility & contrast

On white

6.58

#645F17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#645F17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645F17

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645F17	#FFFFFF	#000000	##FFFFFF
##645F17	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#685B0A

Deuteranopia (green-blind)

#6A5E1C

Tritanopia (blue-blind)

#6C5851

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #645f17;
/* rgb */ color: rgb(100, 95, 23);
/* oklch */ color: oklch(47.6% 0.090 105.3);

Tailwind

colors: {
  custom: {
    50: '#938c5a',
    500: '#645f17',
    950: '#000000',
  },
}

SCSS

$custom: #645f17;
$custom-light: #938c5a;
$custom-dark: #000000;

JSON

{
  "hex": "#645f17",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 23
  },
  "hsl": {
    "h": 56.104,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.47604,
    "c": 0.09033,
    "h": 105.3
  },
  "luminance": 0.10956
}

Semantic roles & 50–950 ramp

primary

#645F17

secondary

#3C429A

accent

#4DE642

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0C04

muted

#7E7D79

Preview Lab

Preview with #645F17

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

Preview Lab → · Contrast checker → · Palette generator →