#637E2E#637E2E

#637E2E is a mid, moderate yellow-green. Relative luminance 0.178; OKLCH L 55.4% C 0.112 H 125.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#637E2E
RGB	rgb(99, 126, 46)
HSL	hsl(80, 47%, 34%)
HSV	hsv(80, 63%, 49%)
CMYK	cmyk(21.4%, 0%, 63.5%, 50.6%)
CIE-LAB	lab(49.22, -22.84, 39.31)
CIE-LCH	lch(49.22, 45.46, 120.16°)
OKLab	oklab(55.44% -0.065 0.0907)
OKLCH	oklch(55.44% 0.112 125.7)
XYZ	xyz(13.0996, 17.7715, 5.3243)
Luminance	0.1777 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637E2E #492E7E

analogous

#7E712E #637E2E #3B7E2E

triadic

#637E2E #2E637E #7E2E63

tetradic

#637E2E #2E7E71 #492E7E #7E2E3B

square

#637E2E #2E7E71 #492E7E #7E2E3B

split-complementary

#637E2E #2E3B7E #712E7E

monochromatic

#1D240D #40511E #637E2E #86AB3E #A3C561

Accessibility & contrast

On white

4.61

#637E2E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#637E2E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #637E2E

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637E2E	#FFFFFF	#000000	##FFFFFF
##637E2E	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#857625

Deuteranopia (green-blind)

#817534

Tritanopia (blue-blind)

#67786D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #637e2e;
/* rgb */ color: rgb(99, 126, 46);
/* oklch */ color: oklch(55.4% 0.112 125.7);

Tailwind

colors: {
  custom: {
    50: '#92a36a',
    500: '#637e2e',
    950: '#000000',
  },
}

SCSS

$custom: #637e2e;
$custom-light: #92a36a;
$custom-dark: #000000;

JSON

{
  "hex": "#637e2e",
  "rgb": {
    "r": 99,
    "g": 126,
    "b": 46
  },
  "hsl": {
    "h": 80.25,
    "s": 46.512,
    "l": 33.725
  },
  "oklch": {
    "l": 0.5544,
    "c": 0.11159,
    "h": 125.7
  },
  "luminance": 0.17772
}

Semantic roles & 50–950 ramp

primary

#637E2E

secondary

#775CAC

accent

#52D67E

background

#F9FAF6

surface

#F1F3EB

border

#CBCDC6

text

#0D0F07

muted

#7E7F7A

Preview Lab

Preview with #637E2E

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

Preview Lab → · Contrast checker → · Palette generator →