#638B2F#638B2F

#638B2F is a mid, vivid yellow-green. Relative luminance 0.213; OKLCH L 58.8% C 0.129 H 129.7°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#638B2F
RGB	rgb(99, 139, 47)
HSL	hsl(86, 49%, 36%)
HSV	hsv(86, 66%, 55%)
CMYK	cmyk(28.8%, 0%, 66.2%, 45.5%)
CIE-LAB	lab(53.30, -29.16, 43.29)
CIE-LCH	lch(53.30, 52.20, 123.97°)
OKLab	oklab(58.75% -0.0824 0.0992)
OKLCH	oklch(58.75% 0.129 129.7)
XYZ	xyz(14.8912, 21.3227, 6.0199)
Luminance	0.2132 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638B2F #572F8B

analogous

#8B852F #638B2F #358B2F

triadic

#638B2F #2F638B #8B2F63

tetradic

#638B2F #2F8B85 #572F8B #8B2F35

square

#638B2F #2F8B85 #572F8B #8B2F35

split-complementary

#638B2F #2F358B #852F8B

monochromatic

#223010 #425D20 #638B2F #84B93E #A1CC68

Accessibility & contrast

On white

3.99

#638B2F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#638B2F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638B2F

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638B2F	#FFFFFF	#000000	##000000
##638B2F	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#918123

Deuteranopia (green-blind)

#8C7E36

Tritanopia (blue-blind)

#668578

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #638b2f;
/* rgb */ color: rgb(99, 139, 47);
/* oklch */ color: oklch(58.8% 0.129 129.7);

Tailwind

colors: {
  custom: {
    50: '#92ad6c',
    500: '#638b2f',
    950: '#000000',
  },
}

SCSS

$custom: #638b2f;
$custom-light: #92ad6c;
$custom-dark: #000000;

JSON

{
  "hex": "#638b2f",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 47
  },
  "hsl": {
    "h": 86.087,
    "s": 49.462,
    "l": 36.471
  },
  "oklch": {
    "l": 0.5875,
    "c": 0.12898,
    "h": 129.7
  },
  "luminance": 0.21323
}

Semantic roles & 50–950 ramp

primary

#638B2F

secondary

#8663B3

accent

#4FD98B

background

#F9FAF6

surface

#F2F4EC

border

#CCCEC7

text

#0D1007

muted

#7E7F7A

Preview Lab

Preview with #638B2F

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

Preview Lab → · Contrast checker → · Palette generator →