#638018#638018

#638018 is a mid, vivid yellow-green. Relative luminance 0.182; OKLCH L 55.8% C 0.130 H 124.7°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#638018
RGB	rgb(99, 128, 24)
HSL	hsl(77, 68%, 30%)
HSV	hsv(77, 81%, 50%)
CMYK	cmyk(22.7%, 0%, 81.3%, 49.8%)
CIE-LAB	lab(49.69, -25.32, 48.58)
CIE-LCH	lch(49.69, 54.78, 117.53°)
OKLab	oklab(55.77% -0.0738 0.1067)
OKLCH	oklch(55.77% 0.13 124.7)
XYZ	xyz(13.0298, 18.1568, 3.6821)
Luminance	0.1816 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638018 #351880

analogous

#806918 #638018 #2F8018

triadic

#638018 #186380 #801863

tetradic

#638018 #188069 #351880 #80182F

square

#638018 #188069 #351880 #80182F

split-complementary

#638018 #182F80 #691880

monochromatic

#141A05 #3B4C0E #638018 #8BB422 #ADDA39

Accessibility & contrast

On white

4.53

#638018 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#638018 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638018

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638018	#FFFFFF	#000000	##000000
##638018	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#887700

Deuteranopia (green-blind)

#847623

Tritanopia (blue-blind)

#68796D

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #638018;
/* rgb */ color: rgb(99, 128, 24);
/* oklch */ color: oklch(55.8% 0.130 124.7);

Tailwind

colors: {
  custom: {
    50: '#93a55f',
    500: '#638018',
    950: '#000000',
  },
}

SCSS

$custom: #638018;
$custom-light: #93a55f;
$custom-dark: #000000;

JSON

{
  "hex": "#638018",
  "rgb": {
    "r": 99,
    "g": 128,
    "b": 24
  },
  "hsl": {
    "h": 76.731,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.55768,
    "c": 0.12974,
    "h": 124.7
  },
  "luminance": 0.18157
}

Semantic roles & 50–950 ramp

primary

#638018

secondary

#6040B4

accent

#3DEB6D

background

#F9FAF5

surface

#F2F4EA

border

#CCCEC6

text

#0D0F05

muted

#7E7F79

Preview Lab

Preview with #638018

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

Preview Lab → · Contrast checker → · Palette generator →