#51901A#51901A

#51901A is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 58.8% C 0.159 H 134.4°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#51901A
RGB	rgb(81, 144, 26)
HSL	hsl(92, 69%, 33%)
HSV	hsv(92, 82%, 56%)
CMYK	cmyk(43.8%, 0%, 81.9%, 43.5%)
CIE-LAB	lab(53.78, -39.57, 51.35)
CIE-LCH	lch(53.78, 64.82, 127.62°)
OKLab	oklab(58.84% -0.1111 0.1133)
OKLCH	oklch(58.84% 0.159 134.4)
XYZ	xyz(13.5528, 21.7697, 4.4649)
Luminance	0.2177 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51901A #591A90

analogous

#8C901A #51901A #1A901E

triadic

#51901A #1A5190 #901A51

tetradic

#51901A #1A8C90 #591A90 #901E1A

square

#51901A #1A8C90 #591A90 #901E1A

split-complementary

#51901A #1E1A90 #901A8C

monochromatic

#172807 #345C11 #51901A #6EC423 #8DDE47

Accessibility & contrast

On white

3.92

#51901A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#51901A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51901A

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51901A	#FFFFFF	#000000	##000000
##51901A	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#968400

Deuteranopia (green-blind)

#8D7F28

Tritanopia (blue-blind)

#508A7B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #51901a;
/* rgb */ color: rgb(81, 144, 26);
/* oklch */ color: oklch(58.8% 0.159 134.4);

Tailwind

colors: {
  custom: {
    50: '#88b162',
    500: '#51901a',
    950: '#000000',
  },
}

SCSS

$custom: #51901a;
$custom-light: #88b162;
$custom-dark: #000000;

JSON

{
  "hex": "#51901a",
  "rgb": {
    "r": 81,
    "g": 144,
    "b": 26
  },
  "hsl": {
    "h": 92.034,
    "s": 69.412,
    "l": 33.333
  },
  "oklch": {
    "l": 0.58838,
    "c": 0.15866,
    "h": 134.4
  },
  "luminance": 0.2177
}

Semantic roles & 50–950 ramp

primary

#51901A

secondary

#8747BF

accent

#3CEC9A

background

#F8FAF6

surface

#F0F5EB

border

#CBCFC6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #51901A

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

Preview Lab → · Contrast checker → · Palette generator →