#51A01F#51A01F

#51A01F is a light, vivid yellow-green. Relative luminance 0.270; OKLCH L 63.1% C 0.176 H 136.5°. Best body text is #000000 at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#51A01F
RGB	rgb(81, 160, 31)
HSL	hsl(97, 68%, 37%)
HSV	hsv(97, 81%, 63%)
CMYK	cmyk(49.4%, 0%, 80.6%, 37.3%)
CIE-LAB	lab(58.96, -45.84, 54.65)
CIE-LCH	lch(58.96, 71.32, 129.99°)
OKLab	oklab(63.1% -0.1276 0.121)
OKLCH	oklch(63.1% 0.176 136.5)
XYZ	xyz(16.2110, 26.9888, 5.6512)
Luminance	0.2699 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A01F #6E1FA0

analogous

#92A01F #51A01F #1FA02D

triadic

#51A01F #1F51A0 #A01F51

tetradic

#51A01F #1F92A0 #6E1FA0 #A02D1F

square

#51A01F #1F92A0 #6E1FA0 #A02D1F

split-complementary

#51A01F #2D1FA0 #A01F92

monochromatic

#1D390B #376D15 #51A01F #6BD329 #8EDF5A

Accessibility & contrast

On white

3.28

#51A01F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.40

#51A01F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A01F

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A01F	#FFFFFF	#000000	##000000
##51A01F	1.00	3.28	6.40	6.40
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.40	21.00	1.00	1.00
##000000	6.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A69200

Deuteranopia (green-blind)

#9B8B2E

Tritanopia (blue-blind)

#4D9A88

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #51a01f;
/* rgb */ color: rgb(81, 160, 31);
/* oklch */ color: oklch(63.1% 0.176 136.5);

Tailwind

colors: {
  custom: {
    50: '#8abd66',
    500: '#51a01f',
    950: '#000000',
  },
}

SCSS

$custom: #51a01f;
$custom-light: #8abd66;
$custom-dark: #000000;

JSON

{
  "hex": "#51a01f",
  "rgb": {
    "r": 81,
    "g": 160,
    "b": 31
  },
  "hsl": {
    "h": 96.744,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.63103,
    "c": 0.17583,
    "h": 136.5
  },
  "luminance": 0.2699
}

Semantic roles & 50–950 ramp

primary

#51A01F

secondary

#9958C3

accent

#3DEAA7

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1206

muted

#7D817A

Preview Lab

Preview with #51A01F

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

Preview Lab → · Contrast checker → · Palette generator →