#51901C#51901C

#51901C is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 58.8% C 0.158 H 134.6°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#51901C
RGB	rgb(81, 144, 28)
HSL	hsl(93, 67%, 34%)
HSV	hsv(93, 81%, 56%)
CMYK	cmyk(43.8%, 0%, 80.6%, 43.5%)
CIE-LAB	lab(53.79, -39.46, 50.74)
CIE-LCH	lch(53.79, 64.28, 127.87°)
OKLab	oklab(58.85% -0.1107 0.1123)
OKLCH	oklch(58.85% 0.158 134.6)
XYZ	xyz(13.5759, 21.7789, 4.5868)
Luminance	0.2178 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51901C #5B1C90

analogous

#8B901C #51901C #1C9021

triadic

#51901C #1C5190 #901C51

tetradic

#51901C #1C8B90 #5B1C90 #90211C

square

#51901C #1C8B90 #5B1C90 #90211C

split-complementary

#51901C #211C90 #901C8B

monochromatic

#172A08 #345D12 #51901C #6EC326 #8DDC4A

Accessibility & contrast

On white

3.92

#51901C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#51901C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51901C

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51901C	#FFFFFF	#000000	##000000
##51901C	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#968400

Deuteranopia (green-blind)

#8D7F29

Tritanopia (blue-blind)

#508A7B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #51901c;
/* rgb */ color: rgb(81, 144, 28);
/* oklch */ color: oklch(58.8% 0.158 134.6);

Tailwind

colors: {
  custom: {
    50: '#88b163',
    500: '#51901c',
    950: '#000000',
  },
}

SCSS

$custom: #51901c;
$custom-light: #88b163;
$custom-dark: #000000;

JSON

{
  "hex": "#51901c",
  "rgb": {
    "r": 81,
    "g": 144,
    "b": 28
  },
  "hsl": {
    "h": 92.586,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.58849,
    "c": 0.15769,
    "h": 134.6
  },
  "luminance": 0.2178
}

Semantic roles & 50–950 ramp

primary

#51901C

secondary

#894ABE

accent

#3DEA9B

background

#F8FAF6

surface

#F0F5EB

border

#CBCFC6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #51901C

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

Preview Lab → · Contrast checker → · Palette generator →