#638B1E#638B1E

#638B1E is a mid, vivid yellow-green. Relative luminance 0.212; OKLCH L 58.6% C 0.141 H 128.2°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#638B1E
RGB	rgb(99, 139, 30)
HSL	hsl(82, 64%, 33%)
HSV	hsv(82, 78%, 55%)
CMYK	cmyk(28.8%, 0%, 78.4%, 45.5%)
CIE-LAB	lab(53.18, -30.33, 49.86)
CIE-LCH	lch(53.18, 58.36, 121.32°)
OKLab	oklab(58.61% -0.087 0.1104)
OKLCH	oklch(58.61% 0.141 128.2)
XYZ	xyz(14.6126, 21.2113, 4.5523)
Luminance	0.2121 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638B1E #461E8B

analogous

#8B7C1E #638B1E #2D8B1E

triadic

#638B1E #1E638B #8B1E63

tetradic

#638B1E #1E8B7C #461E8B #8B1E2D

square

#638B1E #1E8B7C #461E8B #8B1E2D

split-complementary

#638B1E #1E2D8B #7C1E8B

monochromatic

#1B2608 #3F5913 #638B1E #87BD29 #A4D84B

Accessibility & contrast

On white

4.01

#638B1E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#638B1E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638B1E

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638B1E	#FFFFFF	#000000	##000000
##638B1E	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)

#928102

Deuteranopia (green-blind)

#8D7E29

Tritanopia (blue-blind)

#678477

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #638b1e;
/* rgb */ color: rgb(99, 139, 30);
/* oklch */ color: oklch(58.6% 0.141 128.2);

Tailwind

colors: {
  custom: {
    50: '#93ad63',
    500: '#638b1e',
    950: '#000000',
  },
}

SCSS

$custom: #638b1e;
$custom-light: #93ad63;
$custom-dark: #000000;

JSON

{
  "hex": "#638b1e",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 30
  },
  "hsl": {
    "h": 82.018,
    "s": 64.497,
    "l": 33.137
  },
  "oklch": {
    "l": 0.58613,
    "c": 0.14059,
    "h": 128.2
  },
  "luminance": 0.21212
}

Semantic roles & 50–950 ramp

primary

#638B1E

secondary

#734ABB

accent

#40E77E

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638B1E

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

Preview Lab → · Contrast checker → · Palette generator →