#646E18#646E18

#646E18 is a mid, moderate yellow. Relative luminance 0.139; OKLCH L 51.3% C 0.107 H 116.2°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#646E18
RGB	rgb(100, 110, 24)
HSL	hsl(67, 64%, 26%)
HSV	hsv(67, 78%, 43%)
CMYK	cmyk(9.1%, 0%, 78.2%, 56.9%)
CIE-LAB	lab(44.13, -15.54, 43.45)
CIE-LCH	lch(44.13, 46.14, 109.68°)
OKLab	oklab(51.3% -0.0471 0.0958)
OKLCH	oklch(51.3% 0.107 116.2)
XYZ	xyz(10.9966, 13.9273, 2.9729)
Luminance	0.1393 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E18 #22186E

analogous

#6E4D18 #646E18 #396E18

triadic

#646E18 #18646E #6E1864

tetradic

#646E18 #186E4D #22186E #6E1839

square

#646E18 #186E4D #22186E #6E1839

split-complementary

#646E18 #18396E #4D186E

monochromatic

#171905 #363C0D #646E18 #92A023 #BFD22F

Accessibility & contrast

On white

5.55

#646E18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#646E18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E18

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E18	#FFFFFF	#000000	##FFFFFF
##646E18	1.00	5.55	3.79	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#766805

Deuteranopia (green-blind)

#75691F

Tritanopia (blue-blind)

#6B675E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646e18;
/* rgb */ color: rgb(100, 110, 24);
/* oklch */ color: oklch(51.3% 0.107 116.2);

Tailwind

colors: {
  custom: {
    50: '#93975c',
    500: '#646e18',
    950: '#000000',
  },
}

SCSS

$custom: #646e18;
$custom-light: #93975c;
$custom-dark: #000000;

JSON

{
  "hex": "#646e18",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 24
  },
  "hsl": {
    "h": 66.977,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.51303,
    "c": 0.10675,
    "h": 116.2
  },
  "luminance": 0.13927
}

Semantic roles & 50–950 ramp

primary

#646E18

secondary

#4A3EA4

accent

#41E754

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646E18

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

Preview Lab → · Contrast checker → · Palette generator →