#51991D#51991D

#51991D is a mid, vivid yellow-green. Relative luminance 0.246; OKLCH L 61.2% C 0.168 H 135.7°. Best body text is #000000 at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#51991D
RGB	rgb(81, 153, 29)
HSL	hsl(95, 68%, 36%)
HSV	hsv(95, 81%, 60%)
CMYK	cmyk(47.1%, 0%, 81%, 40%)
CIE-LAB	lab(56.70, -43.14, 53.15)
CIE-LCH	lch(56.70, 68.45, 129.07°)
OKLab	oklab(61.24% -0.1205 0.1175)
OKLCH	oklch(61.24% 0.168 135.7)
XYZ	xyz(15.0060, 24.6196, 5.1235)
Luminance	0.2462 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51991D #651D99

analogous

#8F991D #51991D #1D9927

triadic

#51991D #1D5199 #991D51

tetradic

#51991D #1D8F99 #651D99 #99271D

square

#51991D #1D8F99 #651D99 #99271D

split-complementary

#51991D #271D99 #991D8F

monochromatic

#1B3209 #366613 #51991D #6CCC27 #8DDE52

Accessibility & contrast

On white

3.54

#51991D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.92

#51991D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51991D

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51991D	#FFFFFF	#000000	##000000
##51991D	1.00	3.54	5.92	5.92
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.92	21.00	1.00	1.00
##000000	5.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9F8C00

Deuteranopia (green-blind)

#95862B

Tritanopia (blue-blind)

#4E9382

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #51991d;
/* rgb */ color: rgb(81, 153, 29);
/* oklch */ color: oklch(61.2% 0.168 135.7);

Tailwind

colors: {
  custom: {
    50: '#89b764',
    500: '#51991d',
    950: '#000000',
  },
}

SCSS

$custom: #51991d;
$custom-light: #89b764;
$custom-dark: #000000;

JSON

{
  "hex": "#51991d",
  "rgb": {
    "r": 81,
    "g": 153,
    "b": 29
  },
  "hsl": {
    "h": 94.839,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.6124,
    "c": 0.16832,
    "h": 135.7
  },
  "luminance": 0.24621
}

Semantic roles & 50–950 ramp

primary

#51991D

secondary

#9251C1

accent

#3DEBA2

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #51991D

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

Preview Lab → · Contrast checker → · Palette generator →