#638C1E#638C1E

#638C1E is a mid, vivid yellow-green. Relative luminance 0.215; OKLCH L 58.9% C 0.142 H 128.5°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#638C1E
RGB	rgb(99, 140, 30)
HSL	hsl(82, 65%, 33%)
HSV	hsv(82, 79%, 55%)
CMYK	cmyk(29.3%, 0%, 78.6%, 45.1%)
CIE-LAB	lab(53.49, -30.81, 50.16)
CIE-LCH	lch(53.49, 58.86, 121.56°)
OKLab	oklab(58.87% -0.0883 0.111)
OKLCH	oklch(58.87% 0.142 128.5)
XYZ	xyz(14.7580, 21.5022, 4.6008)
Luminance	0.2150 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638C1E #471E8C

analogous

#8C7E1E #638C1E #2C8C1E

triadic

#638C1E #1E638C #8C1E63

tetradic

#638C1E #1E8C7E #471E8C #8C1E2C

square

#638C1E #1E8C7E #471E8C #8C1E2C

split-complementary

#638C1E #1E2C8C #7E1E8C

monochromatic

#1C2708 #3F5A13 #638C1E #87BE29 #A4D94C

Accessibility & contrast

On white

3.96

#638C1E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#638C1E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638C1E

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638C1E	#FFFFFF	#000000	##000000
##638C1E	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938202

Deuteranopia (green-blind)

#8E7F29

Tritanopia (blue-blind)

#668577

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #638c1e;
/* rgb */ color: rgb(99, 140, 30);
/* oklch */ color: oklch(58.9% 0.142 128.5);

Tailwind

colors: {
  custom: {
    50: '#93ae63',
    500: '#638c1e',
    950: '#000000',
  },
}

SCSS

$custom: #638c1e;
$custom-light: #93ae63;
$custom-dark: #000000;

JSON

{
  "hex": "#638c1e",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 30
  },
  "hsl": {
    "h": 82.364,
    "s": 64.706,
    "l": 33.333
  },
  "oklch": {
    "l": 0.58869,
    "c": 0.14188,
    "h": 128.5
  },
  "luminance": 0.21503
}

Semantic roles & 50–950 ramp

primary

#638C1E

secondary

#754BBB

accent

#40E87F

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638C1E

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

Preview Lab → · Contrast checker → · Palette generator →