#51A01B#51A01B

#51A01B is a light, vivid yellow-green. Relative luminance 0.270; OKLCH L 63.1% C 0.178 H 136.3°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#51A01B
RGB	rgb(81, 160, 27)
HSL	hsl(96, 71%, 37%)
HSV	hsv(96, 83%, 63%)
CMYK	cmyk(49.4%, 0%, 83.1%, 37.3%)
CIE-LAB	lab(58.95, -46.04, 55.78)
CIE-LCH	lch(58.95, 72.32, 129.54°)
OKLab	oklab(63.08% -0.1284 0.1228)
OKLCH	oklch(63.08% 0.178 136.3)
XYZ	xyz(16.1615, 26.9690, 5.3906)
Luminance	0.2697 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A01B #6A1BA0

analogous

#94A01B #51A01B #1BA028

triadic

#51A01B #1B51A0 #A01B51

tetradic

#51A01B #1B94A0 #6A1BA0 #A0281B

square

#51A01B #1B94A0 #6A1BA0 #A0281B

split-complementary

#51A01B #281BA0 #A01B94

monochromatic

#1C3709 #366C12 #51A01B #6CD424 #8DE253

Accessibility & contrast

On white

3.28

#51A01B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#51A01B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A01B

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A01B	#FFFFFF	#000000	##000000
##51A01B	1.00	3.28	6.39	6.39
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A69200

Deuteranopia (green-blind)

#9C8B2C

Tritanopia (blue-blind)

#4D9A88

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #51a01b;
/* rgb */ color: rgb(81, 160, 27);
/* oklch */ color: oklch(63.1% 0.178 136.3);

Tailwind

colors: {
  custom: {
    50: '#8abd65',
    500: '#51a01b',
    950: '#000000',
  },
}

SCSS

$custom: #51a01b;
$custom-light: #8abd65;
$custom-dark: #000000;

JSON

{
  "hex": "#51a01b",
  "rgb": {
    "r": 81,
    "g": 160,
    "b": 27
  },
  "hsl": {
    "h": 95.639,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.63082,
    "c": 0.17763,
    "h": 136.3
  },
  "luminance": 0.2697
}

Semantic roles & 50–950 ramp

primary

#51A01B

secondary

#9652C5

accent

#3AEEA5

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0D1206

muted

#7D817A

Preview Lab

Preview with #51A01B

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

Preview Lab → · Contrast checker → · Palette generator →