#638B1C#638B1C

#638B1C is a mid, vivid yellow-green. Relative luminance 0.212; OKLCH L 58.6% C 0.142 H 128.1°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#638B1C
RGB	rgb(99, 139, 28)
HSL	hsl(82, 66%, 33%)
HSV	hsv(82, 80%, 55%)
CMYK	cmyk(28.8%, 0%, 79.9%, 45.5%)
CIE-LAB	lab(53.17, -30.44, 50.51)
CIE-LCH	lch(53.17, 58.97, 121.08°)
OKLab	oklab(58.6% -0.0875 0.1115)
OKLCH	oklch(58.6% 0.142 128.1)
XYZ	xyz(14.5878, 21.2014, 4.4221)
Luminance	0.2120 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638B1C #441C8B

analogous

#8B7C1C #638B1C #2B8B1C

triadic

#638B1C #1C638B #8B1C63

tetradic

#638B1C #1C8B7C #441C8B #8B1C2B

square

#638B1C #1C8B7C #441C8B #8B1C2B

split-complementary

#638B1C #1C2B8B #7C1C8B

monochromatic

#1A2507 #3F5812 #638B1C #87BE26 #A5DA47

Accessibility & contrast

On white

4.01

#638B1C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#638B1C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638B1C

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638B1C	#FFFFFF	#000000	##000000
##638B1C	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#928100

Deuteranopia (green-blind)

#8D7E28

Tritanopia (blue-blind)

#678476

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #638b1c;
/* rgb */ color: rgb(99, 139, 28);
/* oklch */ color: oklch(58.6% 0.142 128.1);

Tailwind

colors: {
  custom: {
    50: '#93ad62',
    500: '#638b1c',
    950: '#000000',
  },
}

SCSS

$custom: #638b1c;
$custom-light: #93ad62;
$custom-dark: #000000;

JSON

{
  "hex": "#638b1c",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 28
  },
  "hsl": {
    "h": 81.622,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.58601,
    "c": 0.14168,
    "h": 128.1
  },
  "luminance": 0.21202
}

Semantic roles & 50–950 ramp

primary

#638B1C

secondary

#7147BC

accent

#3EE97C

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638B1C

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

Preview Lab → · Contrast checker → · Palette generator →