#51991F#51991F

#51991F is a mid, vivid yellow-green. Relative luminance 0.246; OKLCH L 61.3% C 0.167 H 135.8°. Best body text is #000000 at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#51991F
RGB	rgb(81, 153, 31)
HSL	hsl(95, 66%, 36%)
HSV	hsv(95, 80%, 60%)
CMYK	cmyk(47.1%, 0%, 79.7%, 40%)
CIE-LAB	lab(56.71, -43.03, 52.54)
CIE-LCH	lch(56.71, 67.91, 129.32°)
OKLab	oklab(61.25% -0.1201 0.1166)
OKLCH	oklch(61.25% 0.167 135.8)
XYZ	xyz(15.0315, 24.6298, 5.2580)
Luminance	0.2463 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51991F #671F99

analogous

#8E991F #51991F #1F992A

triadic

#51991F #1F5199 #991F51

tetradic

#51991F #1F8E99 #671F99 #992A1F

square

#51991F #1F8E99 #671F99 #992A1F

split-complementary

#51991F #2A1F99 #991F8E

monochromatic

#1B330A #366615 #51991F #6CCC29 #8DDD56

Accessibility & contrast

On white

3.54

#51991F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.93

#51991F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51991F

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51991F	#FFFFFF	#000000	##000000
##51991F	1.00	3.54	5.93	5.93
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.93	21.00	1.00	1.00
##000000	5.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9F8C00

Deuteranopia (green-blind)

#95862D

Tritanopia (blue-blind)

#4E9382

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #51991f;
/* rgb */ color: rgb(81, 153, 31);
/* oklch */ color: oklch(61.3% 0.167 135.8);

Tailwind

colors: {
  custom: {
    50: '#89b765',
    500: '#51991f',
    950: '#000000',
  },
}

SCSS

$custom: #51991f;
$custom-light: #89b765;
$custom-dark: #000000;

JSON

{
  "hex": "#51991f",
  "rgb": {
    "r": 81,
    "g": 153,
    "b": 31
  },
  "hsl": {
    "h": 95.41,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.61252,
    "c": 0.16733,
    "h": 135.8
  },
  "luminance": 0.24631
}

Semantic roles & 50–950 ramp

primary

#51991F

secondary

#9454C0

accent

#3FE9A3

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #51991F

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

Preview Lab → · Contrast checker → · Palette generator →