#637817#637817

#637817 is a mid, vivid yellow-green. Relative luminance 0.161; OKLCH L 53.7% C 0.120 H 121.6°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#637817
RGB	rgb(99, 120, 23)
HSL	hsl(73, 68%, 28%)
HSV	hsv(73, 81%, 47%)
CMYK	cmyk(17.5%, 0%, 80.8%, 52.9%)
CIE-LAB	lab(47.17, -21.32, 46.59)
CIE-LCH	lch(47.17, 51.24, 114.59°)
OKLab	oklab(53.73% -0.063 0.1023)
OKLCH	oklch(53.73% 0.12 121.6)
XYZ	xyz(12.0169, 16.1474, 3.2941)
Luminance	0.1615 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637817 #2C1778

analogous

#785C17 #637817 #327817

triadic

#637817 #176378 #781763

tetradic

#637817 #17785C #2C1778 #781732

square

#637817 #17785C #2C1778 #781732

split-complementary

#637817 #173278 #5C1778

monochromatic

#151A05 #39450D #637817 #8DAB21 #B4D832

Accessibility & contrast

On white

4.97

#637817 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#637817 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637817

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637817	#FFFFFF	#000000	##FFFFFF
##637817	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#807000

Deuteranopia (green-blind)

#7D7021

Tritanopia (blue-blind)

#697166

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #637817;
/* rgb */ color: rgb(99, 120, 23);
/* oklch */ color: oklch(53.7% 0.120 121.6);

Tailwind

colors: {
  custom: {
    50: '#939f5d',
    500: '#637817',
    950: '#000000',
  },
}

SCSS

$custom: #637817;
$custom-light: #939f5d;
$custom-dark: #000000;

JSON

{
  "hex": "#637817",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 23
  },
  "hsl": {
    "h": 72.99,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.53729,
    "c": 0.12015,
    "h": 121.6
  },
  "luminance": 0.16147
}

Semantic roles & 50–950 ramp

primary

#637817

secondary

#563EAD

accent

#3DEB63

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0E05

muted

#7E7E79

Preview Lab

Preview with #637817

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

Preview Lab → · Contrast checker → · Palette generator →