#638E1E#638E1E

#638E1E is a mid, vivid yellow-green. Relative luminance 0.221; OKLCH L 59.4% C 0.144 H 129.0°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#638E1E
RGB	rgb(99, 142, 30)
HSL	hsl(83, 65%, 34%)
HSV	hsv(83, 79%, 56%)
CMYK	cmyk(30.3%, 0%, 78.9%, 44.3%)
CIE-LAB	lab(54.12, -31.74, 50.75)
CIE-LCH	lch(54.12, 59.86, 122.02°)
OKLab	oklab(59.38% -0.0908 0.1123)
OKLCH	oklch(59.38% 0.144 129)
XYZ	xyz(15.0529, 22.0920, 4.6991)
Luminance	0.2209 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638E1E #491E8E

analogous

#8E811E #638E1E #2B8E1E

triadic

#638E1E #1E638E #8E1E63

tetradic

#638E1E #1E8E81 #491E8E #8E1E2B

square

#638E1E #1E8E81 #491E8E #8E1E2B

split-complementary

#638E1E #1E2B8E #811E8E

monochromatic

#1D2909 #405B13 #638E1E #86C129 #A3D94D

Accessibility & contrast

On white

3.88

#638E1E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#638E1E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638E1E

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638E1E	#FFFFFF	#000000	##000000
##638E1E	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#958301

Deuteranopia (green-blind)

#8F802A

Tritanopia (blue-blind)

#668779

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638e1e;
/* rgb */ color: rgb(99, 142, 30);
/* oklch */ color: oklch(59.4% 0.144 129.0);

Tailwind

colors: {
  custom: {
    50: '#93af64',
    500: '#638e1e',
    950: '#000000',
  },
}

SCSS

$custom: #638e1e;
$custom-light: #93af64;
$custom-dark: #000000;

JSON

{
  "hex": "#638e1e",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 30
  },
  "hsl": {
    "h": 83.036,
    "s": 65.116,
    "l": 33.725
  },
  "oklch": {
    "l": 0.59382,
    "c": 0.14444,
    "h": 129
  },
  "luminance": 0.22092
}

Semantic roles & 50–950 ramp

primary

#638E1E

secondary

#774CBC

accent

#40E880

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638E1E

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

Preview Lab → · Contrast checker → · Palette generator →