#51901F#51901F

#51901F is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 58.9% C 0.156 H 134.8°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#51901F
RGB	rgb(81, 144, 31)
HSL	hsl(93, 65%, 34%)
HSV	hsv(93, 78%, 56%)
CMYK	cmyk(43.8%, 0%, 78.5%, 43.5%)
CIE-LAB	lab(53.81, -39.29, 49.78)
CIE-LCH	lch(53.81, 63.42, 128.28°)
OKLab	oklab(58.87% -0.11 0.1108)
OKLCH	oklch(58.87% 0.156 134.8)
XYZ	xyz(13.6136, 21.7940, 4.7854)
Luminance	0.2180 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51901F #5E1F90

analogous

#8A901F #51901F #1F9026

triadic

#51901F #1F5190 #901F51

tetradic

#51901F #1F8A90 #5E1F90 #90261F

square

#51901F #1F8A90 #5E1F90 #90261F

split-complementary

#51901F #261F90 #901F8A

monochromatic

#182B09 #355E14 #51901F #6DC22A #8DD950

Accessibility & contrast

On white

3.92

#51901F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#51901F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51901F

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51901F	#FFFFFF	#000000	##000000
##51901F	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)

#968402

Deuteranopia (green-blind)

#8D7F2B

Tritanopia (blue-blind)

#508A7B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #51901f;
/* rgb */ color: rgb(81, 144, 31);
/* oklch */ color: oklch(58.9% 0.156 134.8);

Tailwind

colors: {
  custom: {
    50: '#88b164',
    500: '#51901f',
    950: '#000000',
  },
}

SCSS

$custom: #51901f;
$custom-light: #88b164;
$custom-dark: #000000;

JSON

{
  "hex": "#51901f",
  "rgb": {
    "r": 81,
    "g": 144,
    "b": 31
  },
  "hsl": {
    "h": 93.451,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.58867,
    "c": 0.15612,
    "h": 134.8
  },
  "luminance": 0.21795
}

Semantic roles & 50–950 ramp

primary

#51901F

secondary

#8C4EBC

accent

#40E89E

background

#F8FAF6

surface

#F0F5EB

border

#CBCFC6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #51901F

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

Preview Lab → · Contrast checker → · Palette generator →