#637D1A#637D1A

#637D1A is a mid, vivid yellow-green. Relative luminance 0.174; OKLCH L 55.0% C 0.125 H 123.7°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#637D1A
RGB	rgb(99, 125, 26)
HSL	hsl(76, 66%, 30%)
HSV	hsv(76, 79%, 49%)
CMYK	cmyk(20.8%, 0%, 79.2%, 51%)
CIE-LAB	lab(48.75, -23.72, 47.05)
CIE-LCH	lch(48.75, 52.69, 116.75°)
OKLab	oklab(55.02% -0.0693 0.1038)
OKLCH	oklch(55.02% 0.125 123.7)
XYZ	xyz(12.6658, 17.3944, 3.6673)
Luminance	0.1739 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637D1A #341A7D

analogous

#7D661A #637D1A #317D1A

triadic

#637D1A #1A637D #7D1A63

tetradic

#637D1A #1A7D66 #341A7D #7D1A31

square

#637D1A #1A7D66 #341A7D #7D1A31

split-complementary

#637D1A #1A317D #661A7D

monochromatic

#141905 #3B4A0F #637D1A #8BB025 #AED63B

Accessibility & contrast

On white

4.69

#637D1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#637D1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637D1A

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637D1A	#FFFFFF	#000000	##FFFFFF
##637D1A	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#857502

Deuteranopia (green-blind)

#817424

Tritanopia (blue-blind)

#68766A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #637d1a;
/* rgb */ color: rgb(99, 125, 26);
/* oklch */ color: oklch(55.0% 0.125 123.7);

Tailwind

colors: {
  custom: {
    50: '#93a25f',
    500: '#637d1a',
    950: '#000000',
  },
}

SCSS

$custom: #637d1a;
$custom-light: #93a25f;
$custom-dark: #000000;

JSON

{
  "hex": "#637d1a",
  "rgb": {
    "r": 99,
    "g": 125,
    "b": 26
  },
  "hsl": {
    "h": 75.758,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.55016,
    "c": 0.12484,
    "h": 123.7
  },
  "luminance": 0.17394
}

Semantic roles & 50–950 ramp

primary

#637D1A

secondary

#5F42B1

accent

#3FE96C

background

#F9FAF5

surface

#F2F3EA

border

#CCCDC6

text

#0D0F05

muted

#7E7F79

Preview Lab

Preview with #637D1A

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

Preview Lab → · Contrast checker → · Palette generator →