#638D19#638D19

#638D19 is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 59.1% C 0.146 H 128.5°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#638D19
RGB	rgb(99, 141, 25)
HSL	hsl(82, 70%, 33%)
HSV	hsv(82, 82%, 55%)
CMYK	cmyk(29.8%, 0%, 82.3%, 44.7%)
CIE-LAB	lab(53.78, -31.52, 52.00)
CIE-LCH	lch(53.78, 60.81, 121.22°)
OKLab	oklab(59.1% -0.0906 0.1141)
OKLCH	oklch(59.1% 0.146 128.5)
XYZ	xyz(14.8459, 21.7722, 4.3398)
Luminance	0.2177 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638D19 #43198D

analogous

#8D7D19 #638D19 #298D19

triadic

#638D19 #19638D #8D1963

tetradic

#638D19 #198D7D #43198D #8D1929

square

#638D19 #198D7D #43198D #8D1929

split-complementary

#638D19 #19298D #7D198D

monochromatic

#1A2507 #3F5910 #638D19 #87C122 #A6DE43

Accessibility & contrast

On white

3.92

#638D19 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#638D19 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D19

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638D19	#FFFFFF	#000000	##000000
##638D19	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948200

Deuteranopia (green-blind)

#8F8026

Tritanopia (blue-blind)

#678678

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638d19;
/* rgb */ color: rgb(99, 141, 25);
/* oklch */ color: oklch(59.1% 0.146 128.5);

Tailwind

colors: {
  custom: {
    50: '#94ae61',
    500: '#638d19',
    950: '#000000',
  },
}

SCSS

$custom: #638d19;
$custom-light: #94ae61;
$custom-dark: #000000;

JSON

{
  "hex": "#638d19",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 25
  },
  "hsl": {
    "h": 81.724,
    "s": 69.88,
    "l": 32.549
  },
  "oklch": {
    "l": 0.59097,
    "c": 0.14569,
    "h": 128.5
  },
  "luminance": 0.21773
}

Semantic roles & 50–950 ramp

primary

#638D19

secondary

#7043BF

accent

#3BED7B

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0E1005

muted

#7E7F7A

Preview Lab

Preview with #638D19

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

Preview Lab → · Contrast checker → · Palette generator →